219872020

素因数分解:

$2^2\times 5^1\times {\mathrm{1103}}^1\times {\mathrm{9967}}^1$

素因数の和:11079

約数の個数: 24

約数和(自身を含む): 462196224

約数和(自身を除く): 242324204

約数列:

[1, 2, 4, 5, 10, 20, 1103, 2206, 4412, 5515, 9967, 11030, 19934, 22060, 39868, 49835, 99670, 199340, 10993601, 21987202, 43974404, 54968005, 109936010, 219872020]

約数ペア:

[(1, 219872020), (2, 109936010), (4, 54968005), (5, 43974404), (10, 21987202), (20, 10993601), (1103, 199340), (2206, 99670), (4412, 49835), (5515, 39868), (9967, 22060), (11030, 19934)]