81267399

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1787}}^1$

素因数の和:1987

約数の個数: 24

約数和(自身を含む): 121984512

約数和(自身を除く): 40717113

約数列:

[1, 3, 9, 31, 93, 163, 279, 489, 1467, 1787, 5053, 5361, 15159, 16083, 45477, 55397, 166191, 291281, 498573, 873843, 2621529, 9029711, 27089133, 81267399]

約数ペア:

[(1, 81267399), (3, 27089133), (9, 9029711), (31, 2621529), (93, 873843), (163, 498573), (279, 291281), (489, 166191), (1467, 55397), (1787, 45477), (5053, 16083), (5361, 15159)]