81649503

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{9829}}^1$

素因数の和:9919

約数の個数: 24

約数和(自身を含む): 128812320

約数和(自身を除く): 47162817

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2769, 8307, 9829, 29487, 88461, 127777, 383331, 697859, 1149993, 2093577, 6280731, 9072167, 27216501, 81649503]

約数ペア:

[(1, 81649503), (3, 27216501), (9, 9072167), (13, 6280731), (39, 2093577), (71, 1149993), (117, 697859), (213, 383331), (639, 127777), (923, 88461), (2769, 29487), (8307, 9829)]