20689919

素因数分解:

${\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:290

約数の個数: 16

約数和(自身を含む): 22052160

約数和(自身を除く): 1362241

約数列:

[1, 37, 61, 89, 103, 2257, 3293, 3811, 5429, 6283, 9167, 200873, 232471, 339179, 559187, 20689919]

約数ペア:

[(1, 20689919), (37, 559187), (61, 339179), (89, 232471), (103, 200873), (2257, 9167), (3293, 6283), (3811, 5429)]