72412580

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{9029}}^1$

素因数の和:9439

約数の個数: 24

約数和(自身を含む): 152462520

約数和(自身を除く): 80049940

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 9029, 18058, 36116, 45145, 90290, 180580, 3620629, 7241258, 14482516, 18103145, 36206290, 72412580]

約数ペア:

[(1, 72412580), (2, 36206290), (4, 18103145), (5, 14482516), (10, 7241258), (20, 3620629), (401, 180580), (802, 90290), (1604, 45145), (2005, 36116), (4010, 18058), (8020, 9029)]