20337495

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31531}}^1$

素因数の和:31582

約数の個数: 16

約数和(自身を含む): 33297792

約数和(自身を除く): 12960297

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31531, 94593, 157655, 472965, 1355833, 4067499, 6779165, 20337495]

約数ペア:

[(1, 20337495), (3, 6779165), (5, 4067499), (15, 1355833), (43, 472965), (129, 157655), (215, 94593), (645, 31531)]