20906481

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{5189}}^1$

素因数の和:5288

約数の個数: 16

約数和(自身を含む): 29894400

約数和(自身を除く): 8987919

約数列:

[1, 3, 17, 51, 79, 237, 1343, 4029, 5189, 15567, 88213, 264639, 409931, 1229793, 6968827, 20906481]

約数ペア:

[(1, 20906481), (3, 6968827), (17, 1229793), (51, 409931), (79, 264639), (237, 88213), (1343, 15567), (4029, 5189)]