18900000005

素因数分解:

$5^1\times {\mathrm{541}}^1\times {\mathrm{587}}^1\times {\mathrm{11903}}^1$

素因数の和:13036

約数の個数: 16

約数和(自身を含む): 22762543104

約数和(自身を除く): 3862543099

約数列:

[1, 5, 541, 587, 2705, 2935, 11903, 59515, 317567, 1587835, 6439523, 6987061, 32197615, 34935305, 3780000001, 18900000005]

約数ペア:

[(1, 18900000005), (5, 3780000001), (541, 34935305), (587, 32197615), (2705, 6987061), (2935, 6439523), (11903, 1587835), (59515, 317567)]