18919505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{1801}}^1$

素因数の和:2008

約数の個数: 16

約数和(自身を含む): 24910848

約数和(自身を除く): 5991343

約数列:

[1, 5, 11, 55, 191, 955, 1801, 2101, 9005, 10505, 19811, 99055, 343991, 1719955, 3783901, 18919505]

約数ペア:

[(1, 18919505), (5, 3783901), (11, 1719955), (55, 343991), (191, 99055), (955, 19811), (1801, 10505), (2101, 9005)]