18315640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{65413}}^1$

素因数の和:65431

約数の個数: 32

約数和(自身を含む): 47098080

約数和(自身を除く): 28782440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 65413, 130826, 261652, 327065, 457891, 523304, 654130, 915782, 1308260, 1831564, 2289455, 2616520, 3663128, 4578910, 9157820, 18315640]

約数ペア:

[(1, 18315640), (2, 9157820), (4, 4578910), (5, 3663128), (7, 2616520), (8, 2289455), (10, 1831564), (14, 1308260), (20, 915782), (28, 654130), (35, 523304), (40, 457891), (56, 327065), (70, 261652), (140, 130826), (280, 65413)]