81828279

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:341

約数の個数: 48

約数和(自身を含む): 133516800

約数和(自身を除く): 51688521

約数列:

[1, 3, 9, 13, 27, 39, 79, 117, 169, 227, 237, 351, 507, 681, 711, 1027, 1521, 2043, 2133, 2951, 3081, 4563, 6129, 8853, 9243, 13351, 17933, 26559, 27729, 38363, 40053, 53799, 79677, 115089, 120159, 161397, 233129, 345267, 360477, 484191, 699387, 1035801, 2098161, 3030677, 6294483, 9092031, 27276093, 81828279]

約数ペア:

[(1, 81828279), (3, 27276093), (9, 9092031), (13, 6294483), (27, 3030677), (39, 2098161), (79, 1035801), (117, 699387), (169, 484191), (227, 360477), (237, 345267), (351, 233129), (507, 161397), (681, 120159), (711, 115089), (1027, 79677), (1521, 53799), (2043, 40053), (2133, 38363), (2951, 27729), (3081, 26559), (4563, 17933), (6129, 13351), (8853, 9243)]