21021707

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{733}}^1$

素因数の和:998

約数の個数: 16

約数和(自身を含む): 25578432

約数和(自身を除く): 4556725

約数列:

[1, 7, 17, 119, 241, 733, 1687, 4097, 5131, 12461, 28679, 87227, 176653, 1236571, 3003101, 21021707]

約数ペア:

[(1, 21021707), (7, 3003101), (17, 1236571), (119, 176653), (241, 87227), (733, 28679), (1687, 12461), (4097, 5131)]