21330710

素因数分解:

$2^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7591}}^1$

素因数の和:7879

約数の個数: 16

約数和(自身を含む): 38536992

約数和(自身を除く): 17206282

約数列:

[1, 2, 5, 10, 281, 562, 1405, 2810, 7591, 15182, 37955, 75910, 2133071, 4266142, 10665355, 21330710]

約数ペア:

[(1, 21330710), (2, 10665355), (5, 4266142), (10, 2133071), (281, 75910), (562, 37955), (1405, 15182), (2810, 7591)]