21972741

素因数分解:

$3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{2131}}^1$

素因数の和:2632

約数の個数: 16

約数和(自身を含む): 33566208

約数和(自身を除く): 11593467

約数列:

[1, 3, 7, 21, 491, 1473, 2131, 3437, 6393, 10311, 14917, 44751, 1046321, 3138963, 7324247, 21972741]

約数ペア:

[(1, 21972741), (3, 7324247), (7, 3138963), (21, 1046321), (491, 44751), (1473, 14917), (2131, 10311), (3437, 6393)]