81540207

素因数分解:

$3^2\times 7^1\times {\mathrm{907}}^1\times {\mathrm{1427}}^1$

素因数の和:2347

約数の個数: 24

約数和(自身を含む): 134848896

約数和(自身を除く): 53308689

約数列:

[1, 3, 7, 9, 21, 63, 907, 1427, 2721, 4281, 6349, 8163, 9989, 12843, 19047, 29967, 57141, 89901, 1294289, 3882867, 9060023, 11648601, 27180069, 81540207]

約数ペア:

[(1, 81540207), (3, 27180069), (7, 11648601), (9, 9060023), (21, 3882867), (63, 1294289), (907, 89901), (1427, 57141), (2721, 29967), (4281, 19047), (6349, 12843), (8163, 9989)]