19980527

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{479}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 23500800

約数和(自身を除く): 3520273

約数列:

[1, 7, 59, 101, 413, 479, 707, 3353, 5959, 28261, 41713, 48379, 197827, 338653, 2854361, 19980527]

約数ペア:

[(1, 19980527), (7, 2854361), (59, 338653), (101, 197827), (413, 48379), (479, 41713), (707, 28261), (3353, 5959)]