18011000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:142

約数の個数: 128

約数和(自身を含む): 50319360

約数和(自身を除く): 32308360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 83, 100, 124, 125, 140, 155, 166, 175, 200, 217, 248, 250, 280, 310, 332, 350, 415, 434, 500, 581, 620, 664, 700, 775, 830, 868, 875, 1000, 1085, 1162, 1240, 1400, 1550, 1660, 1736, 1750, 2075, 2170, 2324, 2573, 2905, 3100, 3320, 3500, 3875, 4150, 4340, 4648, 5146, 5425, 5810, 6200, 7000, 7750, 8300, 8680, 10292, 10375, 10850, 11620, 12865, 14525, 15500, 16600, 18011, 20584, 20750, 21700, 23240, 25730, 27125, 29050, 31000, 36022, 41500, 43400, 51460, 54250, 58100, 64325, 72044, 72625, 83000, 90055, 102920, 108500, 116200, 128650, 144088, 145250, 180110, 217000, 257300, 290500, 321625, 360220, 450275, 514600, 581000, 643250, 720440, 900550, 1286500, 1801100, 2251375, 2573000, 3602200, 4502750, 9005500, 18011000]

約数ペア:

[(1, 18011000), (2, 9005500), (4, 4502750), (5, 3602200), (7, 2573000), (8, 2251375), (10, 1801100), (14, 1286500), (20, 900550), (25, 720440), (28, 643250), (31, 581000), (35, 514600), (40, 450275), (50, 360220), (56, 321625), (62, 290500), (70, 257300), (83, 217000), (100, 180110), (124, 145250), (125, 144088), (140, 128650), (155, 116200), (166, 108500), (175, 102920), (200, 90055), (217, 83000), (248, 72625), (250, 72044), (280, 64325), (310, 58100), (332, 54250), (350, 51460), (415, 43400), (434, 41500), (500, 36022), (581, 31000), (620, 29050), (664, 27125), (700, 25730), (775, 23240), (830, 21700), (868, 20750), (875, 20584), (1000, 18011), (1085, 16600), (1162, 15500), (1240, 14525), (1400, 12865), (1550, 11620), (1660, 10850), (1736, 10375), (1750, 10292), (2075, 8680), (2170, 8300), (2324, 7750), (2573, 7000), (2905, 6200), (3100, 5810), (3320, 5425), (3500, 5146), (3875, 4648), (4150, 4340)]