21458180

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1879}}^1$

素因数の和:2459

約数の個数: 24

約数和(自身を含む): 45165120

約数和(自身を除く): 23706940

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1879, 2284, 2855, 3758, 5710, 7516, 9395, 11420, 18790, 37580, 1072909, 2145818, 4291636, 5364545, 10729090, 21458180]

約数ペア:

[(1, 21458180), (2, 10729090), (4, 5364545), (5, 4291636), (10, 2145818), (20, 1072909), (571, 37580), (1142, 18790), (1879, 11420), (2284, 9395), (2855, 7516), (3758, 5710)]