21929609

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{449}}^1$

素因数の和:509

約数の個数: 18

約数和(自身を含む): 25281450

約数和(自身を除く): 3351841

約数列:

[1, 13, 17, 169, 221, 289, 449, 2873, 3757, 5837, 7633, 48841, 75881, 99229, 129761, 1289977, 1686893, 21929609]

約数ペア:

[(1, 21929609), (13, 1686893), (17, 1289977), (169, 129761), (221, 99229), (289, 75881), (449, 48841), (2873, 7633), (3757, 5837)]