21946640

素因数分解:

$2^4\times 5^1\times {\mathrm{274333}}^1$

素因数の和:274346

約数の個数: 20

約数和(自身を含む): 51026124

約数和(自身を除く): 29079484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274333, 548666, 1097332, 1371665, 2194664, 2743330, 4389328, 5486660, 10973320, 21946640]

約数ペア:

[(1, 21946640), (2, 10973320), (4, 5486660), (5, 4389328), (8, 2743330), (10, 2194664), (16, 1371665), (20, 1097332), (40, 548666), (80, 274333)]