21921597

素因数分解:

$3^4\times {\mathrm{127}}^1\times {\mathrm{2131}}^1$

素因数の和:2270

約数の個数: 20

約数和(自身を含む): 33020416

約数和(自身を除く): 11098819

約数列:

[1, 3, 9, 27, 81, 127, 381, 1143, 2131, 3429, 6393, 10287, 19179, 57537, 172611, 270637, 811911, 2435733, 7307199, 21921597]

約数ペア:

[(1, 21921597), (3, 7307199), (9, 2435733), (27, 811911), (81, 270637), (127, 172611), (381, 57537), (1143, 19179), (2131, 10287), (3429, 6393)]