12686480

素因数分解:

$2^4\times 5^1\times {\mathrm{158581}}^1$

素因数の和:158594

約数の個数: 20

約数和(自身を含む): 29496252

約数和(自身を除く): 16809772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 158581, 317162, 634324, 792905, 1268648, 1585810, 2537296, 3171620, 6343240, 12686480]

約数ペア:

[(1, 12686480), (2, 6343240), (4, 3171620), (5, 2537296), (8, 1585810), (10, 1268648), (16, 792905), (20, 634324), (40, 317162), (80, 158581)]