21921786

素因数分解:

$2^1\times 3^3\times {\mathrm{405959}}^1$

素因数の和:405970

約数の個数: 16

約数和(自身を含む): 48715200

約数和(自身を除く): 26793414

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 405959, 811918, 1217877, 2435754, 3653631, 7307262, 10960893, 21921786]

約数ペア:

[(1, 21921786), (2, 10960893), (3, 7307262), (6, 3653631), (9, 2435754), (18, 1217877), (27, 811918), (54, 405959)]