21178338

素因数分解:

$2^1\times 3^1\times {\mathrm{263}}^1\times {\mathrm{13421}}^1$

素因数の和:13689

約数の個数: 16

約数和(自身を含む): 42520896

約数和(自身を除く): 21342558

約数列:

[1, 2, 3, 6, 263, 526, 789, 1578, 13421, 26842, 40263, 80526, 3529723, 7059446, 10589169, 21178338]

約数ペア:

[(1, 21178338), (2, 10589169), (3, 7059446), (6, 3529723), (263, 80526), (526, 40263), (789, 26842), (1578, 13421)]