205840000

素因数分解:

$2^7\times 5^4\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:148

約数の個数: 160

約数和(自身を含む): 535328640

約数和(自身を除く): 329488640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 83, 100, 124, 125, 128, 155, 160, 166, 200, 248, 250, 310, 320, 332, 400, 415, 496, 500, 620, 625, 640, 664, 775, 800, 830, 992, 1000, 1240, 1250, 1328, 1550, 1600, 1660, 1984, 2000, 2075, 2480, 2500, 2573, 2656, 3100, 3200, 3320, 3875, 3968, 4000, 4150, 4960, 5000, 5146, 5312, 6200, 6640, 7750, 8000, 8300, 9920, 10000, 10292, 10375, 10624, 12400, 12865, 13280, 15500, 16000, 16600, 19375, 19840, 20000, 20584, 20750, 24800, 25730, 26560, 31000, 33200, 38750, 40000, 41168, 41500, 49600, 51460, 51875, 53120, 62000, 64325, 66400, 77500, 80000, 82336, 83000, 99200, 102920, 103750, 124000, 128650, 132800, 155000, 164672, 166000, 205840, 207500, 248000, 257300, 265600, 310000, 321625, 329344, 332000, 411680, 415000, 496000, 514600, 620000, 643250, 664000, 823360, 830000, 1029200, 1240000, 1286500, 1328000, 1608125, 1646720, 1660000, 2058400, 2480000, 2573000, 3216250, 3320000, 4116800, 5146000, 6432500, 6640000, 8233600, 10292000, 12865000, 20584000, 25730000, 41168000, 51460000, 102920000, 205840000]

約数ペア:

[(1, 205840000), (2, 102920000), (4, 51460000), (5, 41168000), (8, 25730000), (10, 20584000), (16, 12865000), (20, 10292000), (25, 8233600), (31, 6640000), (32, 6432500), (40, 5146000), (50, 4116800), (62, 3320000), (64, 3216250), (80, 2573000), (83, 2480000), (100, 2058400), (124, 1660000), (125, 1646720), (128, 1608125), (155, 1328000), (160, 1286500), (166, 1240000), (200, 1029200), (248, 830000), (250, 823360), (310, 664000), (320, 643250), (332, 620000), (400, 514600), (415, 496000), (496, 415000), (500, 411680), (620, 332000), (625, 329344), (640, 321625), (664, 310000), (775, 265600), (800, 257300), (830, 248000), (992, 207500), (1000, 205840), (1240, 166000), (1250, 164672), (1328, 155000), (1550, 132800), (1600, 128650), (1660, 124000), (1984, 103750), (2000, 102920), (2075, 99200), (2480, 83000), (2500, 82336), (2573, 80000), (2656, 77500), (3100, 66400), (3200, 64325), (3320, 62000), (3875, 53120), (3968, 51875), (4000, 51460), (4150, 49600), (4960, 41500), (5000, 41168), (5146, 40000), (5312, 38750), (6200, 33200), (6640, 31000), (7750, 26560), (8000, 25730), (8300, 24800), (9920, 20750), (10000, 20584), (10292, 20000), (10375, 19840), (10624, 19375), (12400, 16600), (12865, 16000), (13280, 15500)]