398438949

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{4657}}^1$

素因数の和:4777

約数の個数: 24

約数和(自身を含む): 567903360

約数和(自身を除く): 169464411

約数列:

[1, 3, 19, 57, 79, 237, 361, 1083, 1501, 4503, 4657, 13971, 28519, 85557, 88483, 265449, 367903, 1103709, 1681177, 5043531, 6990157, 20970471, 132812983, 398438949]

約数ペア:

[(1, 398438949), (3, 132812983), (19, 20970471), (57, 6990157), (79, 5043531), (237, 1681177), (361, 1103709), (1083, 367903), (1501, 265449), (4503, 88483), (4657, 85557), (13971, 28519)]