66720507

素因数分解:

$3^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{3313}}^1$

素因数の和:3467

約数の個数: 24

約数和(自身を含む): 104271696

約数和(自身を除く): 37551189

約数列:

[1, 3, 7, 21, 49, 137, 147, 411, 959, 2877, 3313, 6713, 9939, 20139, 23191, 69573, 162337, 453881, 487011, 1361643, 3177167, 9531501, 22240169, 66720507]

約数ペア:

[(1, 66720507), (3, 22240169), (7, 9531501), (21, 3177167), (49, 1361643), (137, 487011), (147, 453881), (411, 162337), (959, 69573), (2877, 23191), (3313, 20139), (6713, 9939)]