57720025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19081}}^1$

素因数の和:19113

約数の個数: 18

約数和(自身を含む): 78675086

約数和(自身を除く): 20955061

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 19081, 95405, 209891, 477025, 1049455, 2308801, 5247275, 11544005, 57720025]

約数ペア:

[(1, 57720025), (5, 11544005), (11, 5247275), (25, 2308801), (55, 1049455), (121, 477025), (275, 209891), (605, 95405), (3025, 19081)]