18819945

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1499}}^1$

素因数の和:1547

約数の個数: 40

約数和(自身を含む): 34848000

約数和(自身を除く): 16028055

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1499, 2511, 4185, 4497, 7495, 12555, 13491, 22485, 40473, 46469, 67455, 121419, 139407, 202365, 232345, 418221, 607095, 697035, 1254663, 2091105, 3763989, 6273315, 18819945]

約数ペア:

[(1, 18819945), (3, 6273315), (5, 3763989), (9, 2091105), (15, 1254663), (27, 697035), (31, 607095), (45, 418221), (81, 232345), (93, 202365), (135, 139407), (155, 121419), (279, 67455), (405, 46469), (465, 40473), (837, 22485), (1395, 13491), (1499, 12555), (2511, 7495), (4185, 4497)]