90907880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2179}}^1$

素因数の和:2346

約数の個数: 64

約数和(自身を含む): 235440000

約数和(自身を除く): 144532120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 745, 1043, 1192, 1490, 2086, 2179, 2980, 4172, 4358, 5215, 5960, 8344, 8716, 10430, 10895, 15253, 17432, 20860, 21790, 30506, 41720, 43580, 61012, 76265, 87160, 122024, 152530, 305060, 324671, 610120, 649342, 1298684, 1623355, 2272697, 2597368, 3246710, 4545394, 6493420, 9090788, 11363485, 12986840, 18181576, 22726970, 45453940, 90907880]

約数ペア:

[(1, 90907880), (2, 45453940), (4, 22726970), (5, 18181576), (7, 12986840), (8, 11363485), (10, 9090788), (14, 6493420), (20, 4545394), (28, 3246710), (35, 2597368), (40, 2272697), (56, 1623355), (70, 1298684), (140, 649342), (149, 610120), (280, 324671), (298, 305060), (596, 152530), (745, 122024), (1043, 87160), (1192, 76265), (1490, 61012), (2086, 43580), (2179, 41720), (2980, 30506), (4172, 21790), (4358, 20860), (5215, 17432), (5960, 15253), (8344, 10895), (8716, 10430)]