21918771

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2503}}^1$

素因数の和:2655

約数の個数: 24

約数和(自身を含む): 36458240

約数和(自身を除く): 14539469

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2503, 2919, 7509, 8757, 17521, 22527, 52563, 157689, 347917, 1043751, 2435419, 3131253, 7306257, 21918771]

約数ペア:

[(1, 21918771), (3, 7306257), (7, 3131253), (9, 2435419), (21, 1043751), (63, 347917), (139, 157689), (417, 52563), (973, 22527), (1251, 17521), (2503, 8757), (2919, 7509)]