20265620

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2351}}^1$

素因数の和:2791

約数の個数: 24

約数和(自身を含む): 42674688

約数和(自身を除く): 22409068

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 2351, 4310, 4702, 8620, 9404, 11755, 23510, 47020, 1013281, 2026562, 4053124, 5066405, 10132810, 20265620]

約数ペア:

[(1, 20265620), (2, 10132810), (4, 5066405), (5, 4053124), (10, 2026562), (20, 1013281), (431, 47020), (862, 23510), (1724, 11755), (2155, 9404), (2351, 8620), (4310, 4702)]