640929

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 16

約数和(自身を含む): 907200

約数和(自身を除く): 266271

約数列:

[1, 3, 29, 53, 87, 139, 159, 417, 1537, 4031, 4611, 7367, 12093, 22101, 213643, 640929]

約数ペア:

[(1, 640929), (3, 213643), (29, 22101), (53, 12093), (87, 7367), (139, 4611), (159, 4031), (417, 1537)]