20475790

素因数分解:

$2^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{2531}}^1$

素因数の和:3347

約数の個数: 16

約数和(自身を含む): 36916560

約数和(自身を除く): 16440770

約数列:

[1, 2, 5, 10, 809, 1618, 2531, 4045, 5062, 8090, 12655, 25310, 2047579, 4095158, 10237895, 20475790]

約数ペア:

[(1, 20475790), (2, 10237895), (5, 4095158), (10, 2047579), (809, 25310), (1618, 12655), (2531, 8090), (4045, 5062)]