21105410

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{16111}}^1$

素因数の和:16249

約数の個数: 16

約数和(自身を含む): 38282112

約数和(自身を除く): 17176702

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 16111, 32222, 80555, 161110, 2110541, 4221082, 10552705, 21105410]

約数ペア:

[(1, 21105410), (2, 10552705), (5, 4221082), (10, 2110541), (131, 161110), (262, 80555), (655, 32222), (1310, 16111)]