20979426

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{971}}^1$

素因数の和:1266

約数の個数: 32

約数和(自身を含む): 45396288

約数和(自身を除く): 24416862

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 277, 554, 831, 971, 1662, 1942, 2913, 3601, 5826, 7202, 10803, 12623, 21606, 25246, 37869, 75738, 268967, 537934, 806901, 1613802, 3496571, 6993142, 10489713, 20979426]

約数ペア:

[(1, 20979426), (2, 10489713), (3, 6993142), (6, 3496571), (13, 1613802), (26, 806901), (39, 537934), (78, 268967), (277, 75738), (554, 37869), (831, 25246), (971, 21606), (1662, 12623), (1942, 10803), (2913, 7202), (3601, 5826)]