20178340045

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1288939}}^1$

素因数の和:1289076

約数の個数: 16

約数和(自身を含む): 25242600960

約数和(自身を除く): 5064260915

約数列:

[1, 5, 31, 101, 155, 505, 3131, 15655, 1288939, 6444695, 39957109, 130182839, 199785545, 650914195, 4035668009, 20178340045]

約数ペア:

[(1, 20178340045), (5, 4035668009), (31, 650914195), (101, 199785545), (155, 130182839), (505, 39957109), (3131, 6444695), (15655, 1288939)]