81646719

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{571}}^1\times {\mathrm{619}}^1$

素因数の和:1211

約数の個数: 32

約数和(自身を含む): 136181760

約数和(自身を除く): 54535041

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 571, 619, 1713, 1857, 3997, 4333, 6281, 6809, 11991, 12999, 18843, 20427, 43967, 47663, 131901, 142989, 353449, 1060347, 2474143, 3887939, 7422429, 11663817, 27215573, 81646719]

約数ペア:

[(1, 81646719), (3, 27215573), (7, 11663817), (11, 7422429), (21, 3887939), (33, 2474143), (77, 1060347), (231, 353449), (571, 142989), (619, 131901), (1713, 47663), (1857, 43967), (3997, 20427), (4333, 18843), (6281, 12999), (6809, 11991)]