21290230

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163771}}^1$

素因数の和:163791

約数の個数: 16

約数和(自身を含む): 41270544

約数和(自身を除く): 19980314

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163771, 327542, 818855, 1637710, 2129023, 4258046, 10645115, 21290230]

約数ペア:

[(1, 21290230), (2, 10645115), (5, 4258046), (10, 2129023), (13, 1637710), (26, 818855), (65, 327542), (130, 163771)]