21279435

素因数分解:

$3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{9521}}^1$

素因数の和:9678

約数の個数: 16

約数和(自身を含む): 34279200

約数和(自身を除く): 12999765

約数列:

[1, 3, 5, 15, 149, 447, 745, 2235, 9521, 28563, 47605, 142815, 1418629, 4255887, 7093145, 21279435]

約数ペア:

[(1, 21279435), (3, 7093145), (5, 4255887), (15, 1418629), (149, 142815), (447, 47605), (745, 28563), (2235, 9521)]