20778810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53279}}^1$

素因数の和:53302

約数の個数: 32

約数和(自身を含む): 53706240

約数和(自身を除く): 32927430

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53279, 106558, 159837, 266395, 319674, 532790, 692627, 799185, 1385254, 1598370, 2077881, 3463135, 4155762, 6926270, 10389405, 20778810]

約数ペア:

[(1, 20778810), (2, 10389405), (3, 6926270), (5, 4155762), (6, 3463135), (10, 2077881), (13, 1598370), (15, 1385254), (26, 799185), (30, 692627), (39, 532790), (65, 319674), (78, 266395), (130, 159837), (195, 106558), (390, 53279)]