81115587

素因数分解:

$3^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1109}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 142222080

約数和(自身を除く): 61106493

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 243, 301, 387, 567, 903, 1109, 1161, 1701, 2709, 3327, 3483, 7763, 8127, 9981, 10449, 23289, 24381, 29943, 47687, 69867, 73143, 89829, 143061, 209601, 269487, 333809, 429183, 628803, 1001427, 1287549, 1886409, 3004281, 3862647, 9012843, 11587941, 27038529, 81115587]

約数ペア:

[(1, 81115587), (3, 27038529), (7, 11587941), (9, 9012843), (21, 3862647), (27, 3004281), (43, 1886409), (63, 1287549), (81, 1001427), (129, 628803), (189, 429183), (243, 333809), (301, 269487), (387, 209601), (567, 143061), (903, 89829), (1109, 73143), (1161, 69867), (1701, 47687), (2709, 29943), (3327, 24381), (3483, 23289), (7763, 10449), (8127, 9981)]