8181680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7867}}^1$

素因数の和:7893

約数の個数: 40

約数和(自身を含む): 20488272

約数和(自身を除く): 12306592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7867, 15734, 31468, 39335, 62936, 78670, 102271, 125872, 157340, 204542, 314680, 409084, 511355, 629360, 818168, 1022710, 1636336, 2045420, 4090840, 8181680]

約数ペア:

[(1, 8181680), (2, 4090840), (4, 2045420), (5, 1636336), (8, 1022710), (10, 818168), (13, 629360), (16, 511355), (20, 409084), (26, 314680), (40, 204542), (52, 157340), (65, 125872), (80, 102271), (104, 78670), (130, 62936), (208, 39335), (260, 31468), (520, 15734), (1040, 7867)]