21811764

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1571}}^1$

素因数の和:1680

約数の個数: 48

約数和(自身を含む): 55460160

約数和(自身を除く): 33648396

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 89, 156, 178, 267, 356, 534, 1068, 1157, 1571, 2314, 3142, 3471, 4628, 4713, 6284, 6942, 9426, 13884, 18852, 20423, 40846, 61269, 81692, 122538, 139819, 245076, 279638, 419457, 559276, 838914, 1677828, 1817647, 3635294, 5452941, 7270588, 10905882, 21811764]

約数ペア:

[(1, 21811764), (2, 10905882), (3, 7270588), (4, 5452941), (6, 3635294), (12, 1817647), (13, 1677828), (26, 838914), (39, 559276), (52, 419457), (78, 279638), (89, 245076), (156, 139819), (178, 122538), (267, 81692), (356, 61269), (534, 40846), (1068, 20423), (1157, 18852), (1571, 13884), (2314, 9426), (3142, 6942), (3471, 6284), (4628, 4713)]