20013825

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1579}}^1$

素因数の和:1618

約数の個数: 36

約数和(自身を含む): 35853360

約数和(自身を除く): 15839535

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 169, 195, 325, 507, 845, 975, 1579, 2535, 4225, 4737, 7895, 12675, 20527, 23685, 39475, 61581, 102635, 118425, 266851, 307905, 513175, 800553, 1334255, 1539525, 4002765, 6671275, 20013825]

約数ペア:

[(1, 20013825), (3, 6671275), (5, 4002765), (13, 1539525), (15, 1334255), (25, 800553), (39, 513175), (65, 307905), (75, 266851), (169, 118425), (195, 102635), (325, 61581), (507, 39475), (845, 23685), (975, 20527), (1579, 12675), (2535, 7895), (4225, 4737)]