81819477

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:471

約数の個数: 40

約数和(自身を含む): 127334592

約数和(自身を除く): 45515115

約数列:

[1, 3, 9, 27, 41, 71, 81, 123, 213, 347, 369, 639, 1041, 1107, 1917, 2911, 3123, 3321, 5751, 8733, 9369, 14227, 24637, 26199, 28107, 42681, 73911, 78597, 128043, 221733, 235791, 384129, 665199, 1010117, 1152387, 1995597, 3030351, 9091053, 27273159, 81819477]

約数ペア:

[(1, 81819477), (3, 27273159), (9, 9091053), (27, 3030351), (41, 1995597), (71, 1152387), (81, 1010117), (123, 665199), (213, 384129), (347, 235791), (369, 221733), (639, 128043), (1041, 78597), (1107, 73911), (1917, 42681), (2911, 28107), (3123, 26199), (3321, 24637), (5751, 14227), (8733, 9369)]