21670479

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 32064032

約数和(自身を除く): 10393553

約数列:

[1, 3, 9, 97, 103, 241, 291, 309, 723, 873, 927, 2169, 9991, 23377, 24823, 29973, 70131, 74469, 89919, 210393, 223407, 2407831, 7223493, 21670479]

約数ペア:

[(1, 21670479), (3, 7223493), (9, 2407831), (97, 223407), (103, 210393), (241, 89919), (291, 74469), (309, 70131), (723, 29973), (873, 24823), (927, 23377), (2169, 9991)]