72207640

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2731}}^1$

素因数の和:3403

約数の個数: 32

約数和(自身を含む): 162772560

約数和(自身を除く): 90564920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 2731, 3305, 5288, 5462, 6610, 10924, 13220, 13655, 21848, 26440, 27310, 54620, 109240, 1805191, 3610382, 7220764, 9025955, 14441528, 18051910, 36103820, 72207640]

約数ペア:

[(1, 72207640), (2, 36103820), (4, 18051910), (5, 14441528), (8, 9025955), (10, 7220764), (20, 3610382), (40, 1805191), (661, 109240), (1322, 54620), (2644, 27310), (2731, 26440), (3305, 21848), (5288, 13655), (5462, 13220), (6610, 10924)]