20779590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53281}}^1$

素因数の和:53304

約数の個数: 32

約数和(自身を含む): 53708256

約数和(自身を除く): 32928666

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53281, 106562, 159843, 266405, 319686, 532810, 692653, 799215, 1385306, 1598430, 2077959, 3463265, 4155918, 6926530, 10389795, 20779590]

約数ペア:

[(1, 20779590), (2, 10389795), (3, 6926530), (5, 4155918), (6, 3463265), (10, 2077959), (13, 1598430), (15, 1385306), (26, 799215), (30, 692653), (39, 532810), (65, 319686), (78, 266405), (130, 159843), (195, 106562), (390, 53281)]