20818143

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{83}}^1$

素因数の和:180

約数の個数: 36

約数和(自身を含む): 32530680

約数和(自身を除く): 11712537

約数列:

[1, 3, 9, 29, 31, 83, 87, 93, 249, 261, 279, 747, 899, 961, 2407, 2573, 2697, 2883, 7221, 7719, 8091, 8649, 21663, 23157, 27869, 74617, 79763, 83607, 223851, 239289, 250821, 671553, 717867, 2313127, 6939381, 20818143]

約数ペア:

[(1, 20818143), (3, 6939381), (9, 2313127), (29, 717867), (31, 671553), (83, 250821), (87, 239289), (93, 223851), (249, 83607), (261, 79763), (279, 74617), (747, 27869), (899, 23157), (961, 21663), (2407, 8649), (2573, 8091), (2697, 7719), (2883, 7221)]