16820390

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{12101}}^1$

素因数の和:12247

約数の個数: 16

約数和(自身を含む): 30497040

約数和(自身を除く): 13676650

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 12101, 24202, 60505, 121010, 1682039, 3364078, 8410195, 16820390]

約数ペア:

[(1, 16820390), (2, 8410195), (5, 3364078), (10, 1682039), (139, 121010), (278, 60505), (695, 24202), (1390, 12101)]