20726559

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1093}}^1$

素因数の和:1156

約数の個数: 36

約数和(自身を含む): 35668776

約数和(自身を除く): 14942217

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1093, 2107, 2709, 3279, 6321, 7651, 9837, 18963, 22953, 46999, 53557, 68859, 140997, 160671, 328993, 422991, 482013, 986979, 2302951, 2960937, 6908853, 20726559]

約数ペア:

[(1, 20726559), (3, 6908853), (7, 2960937), (9, 2302951), (21, 986979), (43, 482013), (49, 422991), (63, 328993), (129, 160671), (147, 140997), (301, 68859), (387, 53557), (441, 46999), (903, 22953), (1093, 18963), (2107, 9837), (2709, 7651), (3279, 6321)]