258204020

素因数分解:

$2^2\times 5^1\times {\mathrm{12910201}}^1$

素因数の和:12910210

約数の個数: 12

約数和(自身を含む): 542228484

約数和(自身を除く): 284024464

約数列:

[1, 2, 4, 5, 10, 20, 12910201, 25820402, 51640804, 64551005, 129102010, 258204020]

約数ペア:

[(1, 258204020), (2, 129102010), (4, 64551005), (5, 51640804), (10, 25820402), (20, 12910201)]