20187780221

素因数分解:

$7^1\times {\mathrm{277}}^1\times {\mathrm{1811}}^1\times {\mathrm{5749}}^1$

素因数の和:7844

約数の個数: 16

約数和(自身を含む): 23171856000

約数和(自身を除く): 2984075779

約数列:

[1, 7, 277, 1811, 1939, 5749, 12677, 40243, 501647, 1592473, 3511529, 10411439, 11147311, 72880073, 2883968603, 20187780221]

約数ペア:

[(1, 20187780221), (7, 2883968603), (277, 72880073), (1811, 11147311), (1939, 10411439), (5749, 3511529), (12677, 1592473), (40243, 501647)]