51238640

素因数分解:

$2^4\times 5^1\times {\mathrm{640483}}^1$

素因数の和:640496

約数の個数: 20

約数和(自身を含む): 119130024

約数和(自身を除く): 67891384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640483, 1280966, 2561932, 3202415, 5123864, 6404830, 10247728, 12809660, 25619320, 51238640]

約数ペア:

[(1, 51238640), (2, 25619320), (4, 12809660), (5, 10247728), (8, 6404830), (10, 5123864), (16, 3202415), (20, 2561932), (40, 1280966), (80, 640483)]