21728988

素因数分解:

$2^2\times 3^2\times {\mathrm{277}}^1\times {\mathrm{2179}}^1$

素因数の和:2466

約数の個数: 36

約数和(自身を含む): 55149640

約数和(自身を除く): 33420652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 277, 554, 831, 1108, 1662, 2179, 2493, 3324, 4358, 4986, 6537, 8716, 9972, 13074, 19611, 26148, 39222, 78444, 603583, 1207166, 1810749, 2414332, 3621498, 5432247, 7242996, 10864494, 21728988]

約数ペア:

[(1, 21728988), (2, 10864494), (3, 7242996), (4, 5432247), (6, 3621498), (9, 2414332), (12, 1810749), (18, 1207166), (36, 603583), (277, 78444), (554, 39222), (831, 26148), (1108, 19611), (1662, 13074), (2179, 9972), (2493, 8716), (3324, 6537), (4358, 4986)]