425020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 907200

約数和(自身を除く): 482180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 269, 316, 395, 538, 790, 1076, 1345, 1580, 2690, 5380, 21251, 42502, 85004, 106255, 212510, 425020]

約数ペア:

[(1, 425020), (2, 212510), (4, 106255), (5, 85004), (10, 42502), (20, 21251), (79, 5380), (158, 2690), (269, 1580), (316, 1345), (395, 1076), (538, 790)]