28242580

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3557}}^1$

素因数の和:3963

約数の個数: 24

約数和(自身を含む): 59475528

約数和(自身を除く): 31232948

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3557, 3970, 7114, 7940, 14228, 17785, 35570, 71140, 1412129, 2824258, 5648516, 7060645, 14121290, 28242580]

約数ペア:

[(1, 28242580), (2, 14121290), (4, 7060645), (5, 5648516), (10, 2824258), (20, 1412129), (397, 71140), (794, 35570), (1588, 17785), (1985, 14228), (3557, 7940), (3970, 7114)]