21529025

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2861}}^1$

素因数の和:2921

約数の個数: 24

約数和(自身を含む): 31230144

約数和(自身を除く): 9701119

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2861, 7525, 14305, 20027, 71525, 100135, 123023, 500675, 615115, 861161, 3075575, 4305805, 21529025]

約数ペア:

[(1, 21529025), (5, 4305805), (7, 3075575), (25, 861161), (35, 615115), (43, 500675), (175, 123023), (215, 100135), (301, 71525), (1075, 20027), (1505, 14305), (2861, 7525)]