18807620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72337}}^1$

素因数の和:72359

約数の個数: 24

約数和(自身を含む): 42534744

約数和(自身を除く): 23727124

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72337, 144674, 289348, 361685, 723370, 940381, 1446740, 1880762, 3761524, 4701905, 9403810, 18807620]

約数ペア:

[(1, 18807620), (2, 9403810), (4, 4701905), (5, 3761524), (10, 1880762), (13, 1446740), (20, 940381), (26, 723370), (52, 361685), (65, 289348), (130, 144674), (260, 72337)]