20282481

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 13263759

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 191, 207, 243, 437, 513, 573, 621, 1311, 1539, 1719, 1863, 3629, 3933, 4393, 4617, 5157, 5589, 10887, 11799, 13179, 15471, 32661, 35397, 39537, 46413, 83467, 97983, 106191, 118611, 250401, 293949, 355833, 751203, 881847, 1067499, 2253609, 6760827, 20282481]

約数ペア:

[(1, 20282481), (3, 6760827), (9, 2253609), (19, 1067499), (23, 881847), (27, 751203), (57, 355833), (69, 293949), (81, 250401), (171, 118611), (191, 106191), (207, 97983), (243, 83467), (437, 46413), (513, 39537), (573, 35397), (621, 32661), (1311, 15471), (1539, 13179), (1719, 11799), (1863, 10887), (3629, 5589), (3933, 5157), (4393, 4617)]