20345005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6469}}^1$

素因数の和:6528

約数の個数: 16

約数和(自身を含む): 26552880

約数和(自身を除く): 6207875

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6469, 32345, 109973, 239353, 549865, 1196765, 4069001, 20345005]

約数ペア:

[(1, 20345005), (5, 4069001), (17, 1196765), (37, 549865), (85, 239353), (185, 109973), (629, 32345), (3145, 6469)]