20651668

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{1129}}^1$

素因数の和:1419

約数の個数: 24

約数和(自身を含む): 38442600

約数和(自身を除く): 17790932

約数列:

[1, 2, 4, 17, 34, 68, 269, 538, 1076, 1129, 2258, 4516, 4573, 9146, 18292, 19193, 38386, 76772, 303701, 607402, 1214804, 5162917, 10325834, 20651668]

約数ペア:

[(1, 20651668), (2, 10325834), (4, 5162917), (17, 1214804), (34, 607402), (68, 303701), (269, 76772), (538, 38386), (1076, 19193), (1129, 18292), (2258, 9146), (4516, 4573)]