20977749

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{929}}^1$

素因数の和:1141

約数の個数: 24

約数和(自身を含む): 32836440

約数和(自身を除く): 11858691

約数列:

[1, 3, 9, 13, 39, 117, 193, 579, 929, 1737, 2509, 2787, 7527, 8361, 12077, 22581, 36231, 108693, 179297, 537891, 1613673, 2330861, 6992583, 20977749]

約数ペア:

[(1, 20977749), (3, 6992583), (9, 2330861), (13, 1613673), (39, 537891), (117, 179297), (193, 108693), (579, 36231), (929, 22581), (1737, 12077), (2509, 8361), (2787, 7527)]