72487780

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{8609}}^1$

素因数の和:9039

約数の個数: 24

約数和(自身を含む): 152603640

約数和(自身を除く): 80115860

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 8609, 17218, 34436, 43045, 86090, 172180, 3624389, 7248778, 14497556, 18121945, 36243890, 72487780]

約数ペア:

[(1, 72487780), (2, 36243890), (4, 18121945), (5, 14497556), (10, 7248778), (20, 3624389), (421, 172180), (842, 86090), (1684, 43045), (2105, 34436), (4210, 17218), (8420, 8609)]