21389858

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{829}}^1$

素因数の和:954

約数の個数: 32

約数和(自身を含む): 39043200

約数和(自身を除く): 17653342

約数列:

[1, 2, 7, 14, 19, 38, 97, 133, 194, 266, 679, 829, 1358, 1658, 1843, 3686, 5803, 11606, 12901, 15751, 25802, 31502, 80413, 110257, 160826, 220514, 562891, 1125782, 1527847, 3055694, 10694929, 21389858]

約数ペア:

[(1, 21389858), (2, 10694929), (7, 3055694), (14, 1527847), (19, 1125782), (38, 562891), (97, 220514), (133, 160826), (194, 110257), (266, 80413), (679, 31502), (829, 25802), (1358, 15751), (1658, 12901), (1843, 11606), (3686, 5803)]