21804575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2917}}^1$

素因数の和:2963

約数の個数: 24

約数和(自身を含む): 30393888

約数和(自身を除く): 8589313

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2917, 7475, 14585, 37921, 67091, 72925, 189605, 335455, 872183, 948025, 1677275, 4360915, 21804575]

約数ペア:

[(1, 21804575), (5, 4360915), (13, 1677275), (23, 948025), (25, 872183), (65, 335455), (115, 189605), (299, 72925), (325, 67091), (575, 37921), (1495, 14585), (2917, 7475)]