21098799

素因数分解:

$3^4\times {\mathrm{101}}^1\times {\mathrm{2579}}^1$

素因数の和:2692

約数の個数: 20

約数和(自身を含む): 31842360

約数和(自身を除く): 10743561

約数列:

[1, 3, 9, 27, 81, 101, 303, 909, 2579, 2727, 7737, 8181, 23211, 69633, 208899, 260479, 781437, 2344311, 7032933, 21098799]

約数ペア:

[(1, 21098799), (3, 7032933), (9, 2344311), (27, 781437), (81, 260479), (101, 208899), (303, 69633), (909, 23211), (2579, 8181), (2727, 7737)]