20551778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:422

約数の個数: 32

約数和(自身を含む): 34821360

約数和(自身を除く): 14269582

約数列:

[1, 2, 13, 26, 29, 58, 97, 194, 281, 377, 562, 754, 1261, 2522, 2813, 3653, 5626, 7306, 8149, 16298, 27257, 36569, 54514, 73138, 105937, 211874, 354341, 708682, 790453, 1580906, 10275889, 20551778]

約数ペア:

[(1, 20551778), (2, 10275889), (13, 1580906), (26, 790453), (29, 708682), (58, 354341), (97, 211874), (194, 105937), (281, 73138), (377, 54514), (562, 36569), (754, 27257), (1261, 16298), (2522, 8149), (2813, 7306), (3653, 5626)]