15640401

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39199}}^1$

素因数の和:39228

約数の個数: 16

約数和(自身を含む): 25088000

約数和(自身を除く): 9447599

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 39199, 117597, 274393, 744781, 823179, 2234343, 5213467, 15640401]

約数ペア:

[(1, 15640401), (3, 5213467), (7, 2234343), (19, 823179), (21, 744781), (57, 274393), (133, 117597), (399, 39199)]