20277467

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 5573413

約数列:

[1, 7, 23, 29, 43, 101, 161, 203, 301, 667, 707, 989, 1247, 2323, 2929, 4343, 4669, 6923, 8729, 16261, 20503, 28681, 30401, 67367, 99889, 125947, 200767, 471569, 699223, 881629, 2896781, 20277467]

約数ペア:

[(1, 20277467), (7, 2896781), (23, 881629), (29, 699223), (43, 471569), (101, 200767), (161, 125947), (203, 99889), (301, 67367), (667, 30401), (707, 28681), (989, 20503), (1247, 16261), (2323, 8729), (2929, 6923), (4343, 4669)]