21037655

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3119}}^1$

素因数の和:3214

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5919145

約数列:

[1, 5, 19, 71, 95, 355, 1349, 3119, 6745, 15595, 59261, 221449, 296305, 1107245, 4207531, 21037655]

約数ペア:

[(1, 21037655), (5, 4207531), (19, 1107245), (71, 296305), (95, 221449), (355, 59261), (1349, 15595), (3119, 6745)]