21506961

素因数分解:

$3^1\times 7^1\times {\mathrm{937}}^1\times {\mathrm{1093}}^1$

素因数の和:2040

約数の個数: 16

約数和(自身を含む): 32837504

約数和(自身を除く): 11330543

約数列:

[1, 3, 7, 21, 937, 1093, 2811, 3279, 6559, 7651, 19677, 22953, 1024141, 3072423, 7168987, 21506961]

約数ペア:

[(1, 21506961), (3, 7168987), (7, 3072423), (21, 1024141), (937, 22953), (1093, 19677), (2811, 7651), (3279, 6559)]