2018640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:676

約数の個数: 80

約数和(自身を含む): 6749568

約数和(自身を除く): 4730928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 647, 780, 1040, 1294, 1560, 1941, 2588, 3120, 3235, 3882, 5176, 6470, 7764, 8411, 9705, 10352, 12940, 15528, 16822, 19410, 25233, 25880, 31056, 33644, 38820, 42055, 50466, 51760, 67288, 77640, 84110, 100932, 126165, 134576, 155280, 168220, 201864, 252330, 336440, 403728, 504660, 672880, 1009320, 2018640]

約数ペア:

[(1, 2018640), (2, 1009320), (3, 672880), (4, 504660), (5, 403728), (6, 336440), (8, 252330), (10, 201864), (12, 168220), (13, 155280), (15, 134576), (16, 126165), (20, 100932), (24, 84110), (26, 77640), (30, 67288), (39, 51760), (40, 50466), (48, 42055), (52, 38820), (60, 33644), (65, 31056), (78, 25880), (80, 25233), (104, 19410), (120, 16822), (130, 15528), (156, 12940), (195, 10352), (208, 9705), (240, 8411), (260, 7764), (312, 6470), (390, 5176), (520, 3882), (624, 3235), (647, 3120), (780, 2588), (1040, 1941), (1294, 1560)]