21903858

素因数分解:

$2^1\times 3^4\times {\mathrm{135209}}^1$

素因数の和:135223

約数の個数: 20

約数和(自身を含む): 49081230

約数和(自身を除く): 27177372

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 135209, 270418, 405627, 811254, 1216881, 2433762, 3650643, 7301286, 10951929, 21903858]

約数ペア:

[(1, 21903858), (2, 10951929), (3, 7301286), (6, 3650643), (9, 2433762), (18, 1216881), (27, 811254), (54, 405627), (81, 270418), (162, 135209)]