81521433

素因数分解:

$3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{7229}}^1$

素因数の和:7421

約数の個数: 24

約数和(自身を含む): 135345600

約数和(自身を除く): 53824167

約数列:

[1, 3, 7, 9, 21, 63, 179, 537, 1253, 1611, 3759, 7229, 11277, 21687, 50603, 65061, 151809, 455427, 1293991, 3881973, 9057937, 11645919, 27173811, 81521433]

約数ペア:

[(1, 81521433), (3, 27173811), (7, 11645919), (9, 9057937), (21, 3881973), (63, 1293991), (179, 455427), (537, 151809), (1253, 65061), (1611, 50603), (3759, 21687), (7229, 11277)]