20952020

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6427}}^1$

素因数の和:6599

約数の個数: 24

約数和(自身を含む): 44276064

約数和(自身を除く): 23324044

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6427, 12854, 25708, 32135, 64270, 128540, 1047601, 2095202, 4190404, 5238005, 10476010, 20952020]

約数ペア:

[(1, 20952020), (2, 10476010), (4, 5238005), (5, 4190404), (10, 2095202), (20, 1047601), (163, 128540), (326, 64270), (652, 32135), (815, 25708), (1630, 12854), (3260, 6427)]