21515727

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4177}}^1$

素因数の和:4298

約数の個数: 16

約数和(自身を含む): 30683232

約数和(自身を除く): 9167505

約数列:

[1, 3, 17, 51, 101, 303, 1717, 4177, 5151, 12531, 71009, 213027, 421877, 1265631, 7171909, 21515727]

約数ペア:

[(1, 21515727), (3, 7171909), (17, 1265631), (51, 421877), (101, 213027), (303, 71009), (1717, 12531), (4177, 5151)]