18177640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2689}}^1$

素因数の和:2726

約数の個数: 48

約数和(自身を含む): 44304300

約数和(自身を除く): 26126660

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2689, 3380, 5378, 6760, 10756, 13445, 21512, 26890, 34957, 53780, 69914, 107560, 139828, 174785, 279656, 349570, 454441, 699140, 908882, 1398280, 1817764, 2272205, 3635528, 4544410, 9088820, 18177640]

約数ペア:

[(1, 18177640), (2, 9088820), (4, 4544410), (5, 3635528), (8, 2272205), (10, 1817764), (13, 1398280), (20, 908882), (26, 699140), (40, 454441), (52, 349570), (65, 279656), (104, 174785), (130, 139828), (169, 107560), (260, 69914), (338, 53780), (520, 34957), (676, 26890), (845, 21512), (1352, 13445), (1690, 10756), (2689, 6760), (3380, 5378)]