21910239

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{467}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 34240752

約数和(自身を除く): 12330513

約数列:

[1, 3, 9, 13, 39, 117, 401, 467, 1203, 1401, 3609, 4203, 5213, 6071, 15639, 18213, 46917, 54639, 187267, 561801, 1685403, 2434471, 7303413, 21910239]

約数ペア:

[(1, 21910239), (3, 7303413), (9, 2434471), (13, 1685403), (39, 561801), (117, 187267), (401, 54639), (467, 46917), (1203, 18213), (1401, 15639), (3609, 6071), (4203, 5213)]