21572780

素因数分解:

$2^2\times 5^1\times {\mathrm{607}}^1\times {\mathrm{1777}}^1$

素因数の和:2393

約数の個数: 24

約数和(自身を含む): 45403008

約数和(自身を除く): 23830228

約数列:

[1, 2, 4, 5, 10, 20, 607, 1214, 1777, 2428, 3035, 3554, 6070, 7108, 8885, 12140, 17770, 35540, 1078639, 2157278, 4314556, 5393195, 10786390, 21572780]

約数ペア:

[(1, 21572780), (2, 10786390), (4, 5393195), (5, 4314556), (10, 2157278), (20, 1078639), (607, 35540), (1214, 17770), (1777, 12140), (2428, 8885), (3035, 7108), (3554, 6070)]