21764275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{401}}^1$

素因数の和:591

約数の個数: 24

約数和(自身を含む): 29310624

約数和(自身を除く): 7546349

約数列:

[1, 5, 13, 25, 65, 167, 325, 401, 835, 2005, 2171, 4175, 5213, 10025, 10855, 26065, 54275, 66967, 130325, 334835, 870571, 1674175, 4352855, 21764275]

約数ペア:

[(1, 21764275), (5, 4352855), (13, 1674175), (25, 870571), (65, 334835), (167, 130325), (325, 66967), (401, 54275), (835, 26065), (2005, 10855), (2171, 10025), (4175, 5213)]