81225562

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 136080000

約数和(自身を除く): 54854438

約数列:

[1, 2, 11, 22, 71, 142, 149, 298, 349, 698, 781, 1562, 1639, 3278, 3839, 7678, 10579, 21158, 24779, 49558, 52001, 104002, 116369, 232738, 272569, 545138, 572011, 1144022, 3692071, 7384142, 40612781, 81225562]

約数ペア:

[(1, 81225562), (2, 40612781), (11, 7384142), (22, 3692071), (71, 1144022), (142, 572011), (149, 545138), (298, 272569), (349, 232738), (698, 116369), (781, 104002), (1562, 52001), (1639, 49558), (3278, 24779), (3839, 21158), (7678, 10579)]