21377151

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 31921344

約数和(自身を除く): 10544193

約数列:

[1, 3, 9, 47, 97, 141, 291, 423, 521, 873, 1563, 4559, 4689, 13677, 24487, 41031, 50537, 73461, 151611, 220383, 454833, 2375239, 7125717, 21377151]

約数ペア:

[(1, 21377151), (3, 7125717), (9, 2375239), (47, 454833), (97, 220383), (141, 151611), (291, 73461), (423, 50537), (521, 41031), (873, 24487), (1563, 13677), (4559, 4689)]