1801100000

素因数分解:

$2^5\times 5^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 288

約数和(自身を含む): 5291661312

約数和(自身を除く): 3490561312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 32, 35, 40, 50, 56, 62, 70, 80, 83, 100, 112, 124, 125, 140, 155, 160, 166, 175, 200, 217, 224, 248, 250, 280, 310, 332, 350, 400, 415, 434, 496, 500, 560, 581, 620, 625, 664, 700, 775, 800, 830, 868, 875, 992, 1000, 1085, 1120, 1162, 1240, 1250, 1328, 1400, 1550, 1660, 1736, 1750, 2000, 2075, 2170, 2324, 2480, 2500, 2573, 2656, 2800, 2905, 3100, 3125, 3320, 3472, 3500, 3875, 4000, 4150, 4340, 4375, 4648, 4960, 5000, 5146, 5425, 5600, 5810, 6200, 6250, 6640, 6944, 7000, 7750, 8300, 8680, 8750, 9296, 10000, 10292, 10375, 10850, 11620, 12400, 12500, 12865, 13280, 14000, 14525, 15500, 16600, 17360, 17500, 18011, 18592, 19375, 20000, 20584, 20750, 21700, 21875, 23240, 24800, 25000, 25730, 27125, 28000, 29050, 31000, 33200, 34720, 35000, 36022, 38750, 41168, 41500, 43400, 43750, 46480, 50000, 51460, 51875, 54250, 58100, 62000, 64325, 66400, 70000, 72044, 72625, 77500, 82336, 83000, 86800, 87500, 90055, 92960, 96875, 100000, 102920, 103750, 108500, 116200, 124000, 128650, 135625, 140000, 144088, 145250, 155000, 166000, 173600, 175000, 180110, 193750, 205840, 207500, 217000, 232400, 257300, 259375, 271250, 288176, 290500, 310000, 321625, 332000, 350000, 360220, 363125, 387500, 411680, 415000, 434000, 450275, 464800, 514600, 518750, 542500, 576352, 581000, 620000, 643250, 678125, 700000, 720440, 726250, 775000, 830000, 868000, 900550, 1029200, 1037500, 1085000, 1162000, 1286500, 1356250, 1440880, 1452500, 1550000, 1608125, 1660000, 1801100, 1815625, 2058400, 2075000, 2170000, 2251375, 2324000, 2573000, 2712500, 2881760, 2905000, 3100000, 3216250, 3602200, 3631250, 4150000, 4340000, 4502750, 5146000, 5425000, 5810000, 6432500, 7204400, 7262500, 8040625, 8300000, 9005500, 10292000, 10850000, 11256875, 11620000, 12865000, 14408800, 14525000, 16081250, 18011000, 21700000, 22513750, 25730000, 29050000, 32162500, 36022000, 45027500, 51460000, 56284375, 58100000, 64325000, 72044000, 90055000, 112568750, 128650000, 180110000, 225137500, 257300000, 360220000, 450275000, 900550000, 1801100000]

約数ペア:

[(1, 1801100000), (2, 900550000), (4, 450275000), (5, 360220000), (7, 257300000), (8, 225137500), (10, 180110000), (14, 128650000), (16, 112568750), (20, 90055000), (25, 72044000), (28, 64325000), (31, 58100000), (32, 56284375), (35, 51460000), (40, 45027500), (50, 36022000), (56, 32162500), (62, 29050000), (70, 25730000), (80, 22513750), (83, 21700000), (100, 18011000), (112, 16081250), (124, 14525000), (125, 14408800), (140, 12865000), (155, 11620000), (160, 11256875), (166, 10850000), (175, 10292000), (200, 9005500), (217, 8300000), (224, 8040625), (248, 7262500), (250, 7204400), (280, 6432500), (310, 5810000), (332, 5425000), (350, 5146000), (400, 4502750), (415, 4340000), (434, 4150000), (496, 3631250), (500, 3602200), (560, 3216250), (581, 3100000), (620, 2905000), (625, 2881760), (664, 2712500), (700, 2573000), (775, 2324000), (800, 2251375), (830, 2170000), (868, 2075000), (875, 2058400), (992, 1815625), (1000, 1801100), (1085, 1660000), (1120, 1608125), (1162, 1550000), (1240, 1452500), (1250, 1440880), (1328, 1356250), (1400, 1286500), (1550, 1162000), (1660, 1085000), (1736, 1037500), (1750, 1029200), (2000, 900550), (2075, 868000), (2170, 830000), (2324, 775000), (2480, 726250), (2500, 720440), (2573, 700000), (2656, 678125), (2800, 643250), (2905, 620000), (3100, 581000), (3125, 576352), (3320, 542500), (3472, 518750), (3500, 514600), (3875, 464800), (4000, 450275), (4150, 434000), (4340, 415000), (4375, 411680), (4648, 387500), (4960, 363125), (5000, 360220), (5146, 350000), (5425, 332000), (5600, 321625), (5810, 310000), (6200, 290500), (6250, 288176), (6640, 271250), (6944, 259375), (7000, 257300), (7750, 232400), (8300, 217000), (8680, 207500), (8750, 205840), (9296, 193750), (10000, 180110), (10292, 175000), (10375, 173600), (10850, 166000), (11620, 155000), (12400, 145250), (12500, 144088), (12865, 140000), (13280, 135625), (14000, 128650), (14525, 124000), (15500, 116200), (16600, 108500), (17360, 103750), (17500, 102920), (18011, 100000), (18592, 96875), (19375, 92960), (20000, 90055), (20584, 87500), (20750, 86800), (21700, 83000), (21875, 82336), (23240, 77500), (24800, 72625), (25000, 72044), (25730, 70000), (27125, 66400), (28000, 64325), (29050, 62000), (31000, 58100), (33200, 54250), (34720, 51875), (35000, 51460), (36022, 50000), (38750, 46480), (41168, 43750), (41500, 43400)]