20538115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{2953}}^1$

素因数の和:3078

約数の個数: 16

約数和(自身を含む): 26798688

約数和(自身を除く): 6260573

約数列:

[1, 5, 13, 65, 107, 535, 1391, 2953, 6955, 14765, 38389, 191945, 315971, 1579855, 4107623, 20538115]

約数ペア:

[(1, 20538115), (5, 4107623), (13, 1579855), (65, 315971), (107, 191945), (535, 38389), (1391, 14765), (2953, 6955)]