21279398

素因数分解:

$2^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{4951}}^1$

素因数の和:5267

約数の個数: 16

約数和(自身を含む): 36605184

約数和(自身を除く): 15325786

約数列:

[1, 2, 7, 14, 307, 614, 2149, 4298, 4951, 9902, 34657, 69314, 1519957, 3039914, 10639699, 21279398]

約数ペア:

[(1, 21279398), (2, 10639699), (7, 3039914), (14, 1519957), (307, 69314), (614, 34657), (2149, 9902), (4298, 4951)]