18820263

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 32438016

約数和(自身を除く): 13617753

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 103, 113, 147, 231, 309, 339, 539, 721, 791, 1133, 1243, 1617, 2163, 2373, 3399, 3729, 5047, 5537, 7931, 8701, 11639, 15141, 16611, 23793, 26103, 34917, 55517, 60907, 81473, 128029, 166551, 182721, 244419, 384087, 570311, 896203, 1710933, 2688609, 6273421, 18820263]

約数ペア:

[(1, 18820263), (3, 6273421), (7, 2688609), (11, 1710933), (21, 896203), (33, 570311), (49, 384087), (77, 244419), (103, 182721), (113, 166551), (147, 128029), (231, 81473), (309, 60907), (339, 55517), (539, 34917), (721, 26103), (791, 23793), (1133, 16611), (1243, 15141), (1617, 11639), (2163, 8701), (2373, 7931), (3399, 5537), (3729, 5047)]