320200490

素因数分解:

$2^1\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{24841}}^1$

素因数の和:26137

約数の個数: 16

約数和(自身を含む): 576831240

約数和(自身を除く): 256630750

約数列:

[1, 2, 5, 10, 1289, 2578, 6445, 12890, 24841, 49682, 124205, 248410, 32020049, 64040098, 160100245, 320200490]

約数ペア:

[(1, 320200490), (2, 160100245), (5, 64040098), (10, 32020049), (1289, 248410), (2578, 124205), (6445, 49682), (12890, 24841)]