21310840

素因数分解:

$2^3\times 5^1\times {\mathrm{532771}}^1$

素因数の和:532782

約数の個数: 16

約数和(自身を含む): 47949480

約数和(自身を除く): 26638640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532771, 1065542, 2131084, 2663855, 4262168, 5327710, 10655420, 21310840]

約数ペア:

[(1, 21310840), (2, 10655420), (4, 5327710), (5, 4262168), (8, 2663855), (10, 2131084), (20, 1065542), (40, 532771)]