20118895

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1682

約数の個数: 16

約数和(自身を含む): 25272000

約数和(自身を除く): 5153105

約数列:

[1, 5, 29, 89, 145, 445, 1559, 2581, 7795, 12905, 45211, 138751, 226055, 693755, 4023779, 20118895]

約数ペア:

[(1, 20118895), (5, 4023779), (29, 693755), (89, 226055), (145, 138751), (445, 45211), (1559, 12905), (2581, 7795)]