18905013

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 28543320

約数和(自身を除く): 9638307

約数列:

[1, 3, 9, 29, 87, 113, 261, 339, 641, 1017, 1923, 3277, 5769, 9831, 18589, 29493, 55767, 72433, 167301, 217299, 651897, 2100557, 6301671, 18905013]

約数ペア:

[(1, 18905013), (3, 6301671), (9, 2100557), (29, 651897), (87, 217299), (113, 167301), (261, 72433), (339, 55767), (641, 29493), (1017, 18589), (1923, 9831), (3277, 5769)]