20673205

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 30140928

約数和(自身を除く): 9467723

約数列:

[1, 5, 7, 23, 35, 61, 115, 161, 305, 421, 427, 805, 1403, 2105, 2135, 2947, 7015, 9683, 9821, 14735, 25681, 48415, 49105, 67781, 128405, 179767, 338905, 590663, 898835, 2953315, 4134641, 20673205]

約数ペア:

[(1, 20673205), (5, 4134641), (7, 2953315), (23, 898835), (35, 590663), (61, 338905), (115, 179767), (161, 128405), (305, 67781), (421, 49105), (427, 48415), (805, 25681), (1403, 14735), (2105, 9821), (2135, 9683), (2947, 7015)]