21316589

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{661}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 25929216

約数和(自身を除く): 4612627

約数列:

[1, 7, 17, 119, 271, 661, 1897, 4607, 4627, 11237, 32249, 78659, 179131, 1253917, 3045227, 21316589]

約数ペア:

[(1, 21316589), (7, 3045227), (17, 1253917), (119, 179131), (271, 78659), (661, 32249), (1897, 11237), (4607, 4627)]