20431521

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1043

約数の個数: 40

約数和(自身を含む): 34778304

約数和(自身を除く): 14346783

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 81, 99, 207, 253, 297, 621, 759, 891, 997, 1863, 2277, 2991, 6831, 8973, 10967, 20493, 22931, 26919, 32901, 68793, 80757, 98703, 206379, 252241, 296109, 619137, 756723, 888327, 1857411, 2270169, 6810507, 20431521]

約数ペア:

[(1, 20431521), (3, 6810507), (9, 2270169), (11, 1857411), (23, 888327), (27, 756723), (33, 619137), (69, 296109), (81, 252241), (99, 206379), (207, 98703), (253, 80757), (297, 68793), (621, 32901), (759, 26919), (891, 22931), (997, 20493), (1863, 10967), (2277, 8973), (2991, 6831)]