18987982

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{25183}}^1$

素因数の和:25227

約数の個数: 16

約数和(自身を含む): 31731840

約数和(自身を除く): 12743858

約数列:

[1, 2, 13, 26, 29, 58, 377, 754, 25183, 50366, 327379, 654758, 730307, 1460614, 9493991, 18987982]

約数ペア:

[(1, 18987982), (2, 9493991), (13, 1460614), (26, 730307), (29, 654758), (58, 327379), (377, 50366), (754, 25183)]