21261207

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{6379}}^1$

素因数の和:6494

約数の個数: 16

約数和(自身を含む): 31236480

約数和(自身を除く): 9975273

約数列:

[1, 3, 11, 33, 101, 303, 1111, 3333, 6379, 19137, 70169, 210507, 644279, 1932837, 7087069, 21261207]

約数ペア:

[(1, 21261207), (3, 7087069), (11, 1932837), (33, 644279), (101, 210507), (303, 70169), (1111, 19137), (3333, 6379)]