78877220

素因数分解:

$2^2\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{3209}}^1$

素因数の和:4447

約数の個数: 24

約数和(自身を含む): 165828600

約数和(自身を除く): 86951380

約数列:

[1, 2, 4, 5, 10, 20, 1229, 2458, 3209, 4916, 6145, 6418, 12290, 12836, 16045, 24580, 32090, 64180, 3943861, 7887722, 15775444, 19719305, 39438610, 78877220]

約数ペア:

[(1, 78877220), (2, 39438610), (4, 19719305), (5, 15775444), (10, 7887722), (20, 3943861), (1229, 64180), (2458, 32090), (3209, 24580), (4916, 16045), (6145, 12836), (6418, 12290)]