51238160

素因数分解:

$2^4\times 5^1\times {\mathrm{640477}}^1$

素因数の和:640490

約数の個数: 20

約数和(自身を含む): 119128908

約数和(自身を除く): 67890748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640477, 1280954, 2561908, 3202385, 5123816, 6404770, 10247632, 12809540, 25619080, 51238160]

約数ペア:

[(1, 51238160), (2, 25619080), (4, 12809540), (5, 10247632), (8, 6404770), (10, 5123816), (16, 3202385), (20, 2561908), (40, 1280954), (80, 640477)]