21238010

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111779}}^1$

素因数の和:111805

約数の個数: 16

約数和(自身を含む): 40240800

約数和(自身を除く): 19002790

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111779, 223558, 558895, 1117790, 2123801, 4247602, 10619005, 21238010]

約数ペア:

[(1, 21238010), (2, 10619005), (5, 4247602), (10, 2123801), (19, 1117790), (38, 558895), (95, 223558), (190, 111779)]