21031888665

素因数分解:

$3^1\times 5^1\times {\mathrm{2531}}^1\times {\mathrm{553981}}^1$

素因数の和:556520

約数の個数: 16

約数和(自身を含む): 33664378176

約数和(自身を除く): 12632489511

約数列:

[1, 3, 5, 15, 2531, 7593, 12655, 37965, 553981, 1661943, 2769905, 8309715, 1402125911, 4206377733, 7010629555, 21031888665]

約数ペア:

[(1, 21031888665), (3, 7010629555), (5, 4206377733), (15, 1402125911), (2531, 8309715), (7593, 2769905), (12655, 1661943), (37965, 553981)]