21306921

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{557}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 29248128

約数和(自身を除く): 7941207

約数列:

[1, 3, 41, 123, 311, 557, 933, 1671, 12751, 22837, 38253, 68511, 173227, 519681, 7102307, 21306921]

約数ペア:

[(1, 21306921), (3, 7102307), (41, 519681), (123, 173227), (311, 68511), (557, 38253), (933, 22837), (1671, 12751)]