21995919

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5167}}^1$

素因数の和:5227

約数の個数: 24

約数和(自身を含む): 35473152

約数和(自身を除く): 13477233

約数列:

[1, 3, 9, 11, 33, 43, 99, 129, 387, 473, 1419, 4257, 5167, 15501, 46503, 56837, 170511, 222181, 511533, 666543, 1999629, 2443991, 7331973, 21995919]

約数ペア:

[(1, 21995919), (3, 7331973), (9, 2443991), (11, 1999629), (33, 666543), (43, 511533), (99, 222181), (129, 170511), (387, 56837), (473, 46503), (1419, 15501), (4257, 5167)]