20403898557

素因数分解:

$3^1\times 7^2\times {\mathrm{1229}}^1\times {\mathrm{112939}}^1$

素因数の和:114185

約数の個数: 24

約数和(自身を含む): 31672893600

約数和(自身を除く): 11268995043

約数列:

[1, 3, 7, 21, 49, 147, 1229, 3687, 8603, 25809, 60221, 112939, 180663, 338817, 790573, 2371719, 5534011, 16602033, 138802031, 416406093, 971614217, 2914842651, 6801299519, 20403898557]

約数ペア:

[(1, 20403898557), (3, 6801299519), (7, 2914842651), (21, 971614217), (49, 416406093), (147, 138802031), (1229, 16602033), (3687, 5534011), (8603, 2371719), (25809, 790573), (60221, 338817), (112939, 180663)]