20354960

素因数分解:

$2^4\times 5^1\times {\mathrm{254437}}^1$

素因数の和:254450

約数の個数: 20

約数和(自身を含む): 47325468

約数和(自身を除く): 26970508

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254437, 508874, 1017748, 1272185, 2035496, 2544370, 4070992, 5088740, 10177480, 20354960]

約数ペア:

[(1, 20354960), (2, 10177480), (4, 5088740), (5, 4070992), (8, 2544370), (10, 2035496), (16, 1272185), (20, 1017748), (40, 508874), (80, 254437)]