21062660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61949}}^1$

素因数の和:61975

約数の個数: 24

約数和(自身を含む): 46834200

約数和(自身を除く): 25771540

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61949, 123898, 247796, 309745, 619490, 1053133, 1238980, 2106266, 4212532, 5265665, 10531330, 21062660]

約数ペア:

[(1, 21062660), (2, 10531330), (4, 5265665), (5, 4212532), (10, 2106266), (17, 1238980), (20, 1053133), (34, 619490), (68, 309745), (85, 247796), (170, 123898), (340, 61949)]