21295617

素因数分解:

$3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{4243}}^1$

素因数の和:4492

約数の個数: 16

約数和(自身を含む): 32593920

約数和(自身を除く): 11298303

約数列:

[1, 3, 7, 21, 239, 717, 1673, 4243, 5019, 12729, 29701, 89103, 1014077, 3042231, 7098539, 21295617]

約数ペア:

[(1, 21295617), (3, 7098539), (7, 3042231), (21, 1014077), (239, 89103), (717, 29701), (1673, 12729), (4243, 5019)]