289257620

素因数分解:

$2^2\times 5^1\times {\mathrm{14462881}}^1$

素因数の和:14462890

約数の個数: 12

約数和(自身を含む): 607441044

約数和(自身を除く): 318183424

約数列:

[1, 2, 4, 5, 10, 20, 14462881, 28925762, 57851524, 72314405, 144628810, 289257620]

約数ペア:

[(1, 289257620), (2, 144628810), (4, 72314405), (5, 57851524), (10, 28925762), (20, 14462881)]