638534841

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1788613}}^1$

素因数の和:1788640

約数の個数: 16

約数和(自身を含む): 1030241664

約数和(自身を除く): 391706823

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 1788613, 5365839, 12520291, 30406421, 37560873, 91219263, 212844947, 638534841]

約数ペア:

[(1, 638534841), (3, 212844947), (7, 91219263), (17, 37560873), (21, 30406421), (51, 12520291), (119, 5365839), (357, 1788613)]