21871473

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{179}}^1\times {\mathrm{241}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 31885920

約数和(自身を除く): 10014447

約数列:

[1, 3, 13, 39, 169, 179, 241, 507, 537, 723, 2327, 3133, 6981, 9399, 30251, 40729, 43139, 90753, 122187, 129417, 560807, 1682421, 7290491, 21871473]

約数ペア:

[(1, 21871473), (3, 7290491), (13, 1682421), (39, 560807), (169, 129417), (179, 122187), (241, 90753), (507, 43139), (537, 40729), (723, 30251), (2327, 9399), (3133, 6981)]