20019867

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 32148480

約数和(自身を除く): 12128613

約数列:

[1, 3, 7, 21, 23, 69, 161, 181, 229, 483, 543, 687, 1267, 1603, 3801, 4163, 4809, 5267, 12489, 15801, 29141, 36869, 41449, 87423, 110607, 124347, 290143, 870429, 953327, 2859981, 6673289, 20019867]

約数ペア:

[(1, 20019867), (3, 6673289), (7, 2859981), (21, 953327), (23, 870429), (69, 290143), (161, 124347), (181, 110607), (229, 87423), (483, 41449), (543, 36869), (687, 29141), (1267, 15801), (1603, 12489), (3801, 5267), (4163, 4809)]