21877509

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{701}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 29787264

約数和(自身を除く): 7909755

約数列:

[1, 3, 101, 103, 303, 309, 701, 2103, 10403, 31209, 70801, 72203, 212403, 216609, 7292503, 21877509]

約数ペア:

[(1, 21877509), (3, 7292503), (101, 216609), (103, 212403), (303, 72203), (309, 70801), (701, 31209), (2103, 10403)]