19391620

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1861}}^1$

素因数の和:2391

約数の個数: 24

約数和(自身を含む): 40822488

約数和(自身を除く): 21430868

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 1861, 2084, 2605, 3722, 5210, 7444, 9305, 10420, 18610, 37220, 969581, 1939162, 3878324, 4847905, 9695810, 19391620]

約数ペア:

[(1, 19391620), (2, 9695810), (4, 4847905), (5, 3878324), (10, 1939162), (20, 969581), (521, 37220), (1042, 18610), (1861, 10420), (2084, 9305), (2605, 7444), (3722, 5210)]