20957872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5927}}^1$

素因数の和:5965

約数の個数: 40

約数和(自身を含む): 46309536

約数和(自身を除く): 25351664

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5927, 11854, 23708, 47416, 77051, 94832, 100759, 154102, 201518, 308204, 403036, 616408, 806072, 1232816, 1309867, 1612144, 2619734, 5239468, 10478936, 20957872]

約数ペア:

[(1, 20957872), (2, 10478936), (4, 5239468), (8, 2619734), (13, 1612144), (16, 1309867), (17, 1232816), (26, 806072), (34, 616408), (52, 403036), (68, 308204), (104, 201518), (136, 154102), (208, 100759), (221, 94832), (272, 77051), (442, 47416), (884, 23708), (1768, 11854), (3536, 5927)]