20835640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74413}}^1$

素因数の和:74431

約数の個数: 32

約数和(自身を含む): 53578080

約数和(自身を除く): 32742440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74413, 148826, 297652, 372065, 520891, 595304, 744130, 1041782, 1488260, 2083564, 2604455, 2976520, 4167128, 5208910, 10417820, 20835640]

約数ペア:

[(1, 20835640), (2, 10417820), (4, 5208910), (5, 4167128), (7, 2976520), (8, 2604455), (10, 2083564), (14, 1488260), (20, 1041782), (28, 744130), (35, 595304), (40, 520891), (56, 372065), (70, 297652), (140, 148826), (280, 74413)]