21556865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{17041}}^1$

素因数の和:17080

約数の個数: 16

約数和(自身を含む): 29448576

約数和(自身を除く): 7891711

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 17041, 85205, 187451, 391943, 937255, 1959715, 4311373, 21556865]

約数ペア:

[(1, 21556865), (5, 4311373), (11, 1959715), (23, 937255), (55, 391943), (115, 187451), (253, 85205), (1265, 17041)]