80132020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56431}}^1$

素因数の和:56511

約数の個数: 24

約数和(自身を含む): 170650368

約数和(自身を除く): 90518348

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56431, 112862, 225724, 282155, 564310, 1128620, 4006601, 8013202, 16026404, 20033005, 40066010, 80132020]

約数ペア:

[(1, 80132020), (2, 40066010), (4, 20033005), (5, 16026404), (10, 8013202), (20, 4006601), (71, 1128620), (142, 564310), (284, 282155), (355, 225724), (710, 112862), (1420, 56431)]