20040471

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 33246720

約数和(自身を除く): 13206249

約数列:

[1, 3, 9, 11, 33, 47, 59, 73, 99, 141, 177, 219, 423, 517, 531, 649, 657, 803, 1551, 1947, 2409, 2773, 3431, 4307, 4653, 5841, 7227, 8319, 10293, 12921, 24957, 30503, 30879, 37741, 38763, 47377, 91509, 113223, 142131, 202429, 274527, 339669, 426393, 607287, 1821861, 2226719, 6680157, 20040471]

約数ペア:

[(1, 20040471), (3, 6680157), (9, 2226719), (11, 1821861), (33, 607287), (47, 426393), (59, 339669), (73, 274527), (99, 202429), (141, 142131), (177, 113223), (219, 91509), (423, 47377), (517, 38763), (531, 37741), (649, 30879), (657, 30503), (803, 24957), (1551, 12921), (1947, 10293), (2409, 8319), (2773, 7227), (3431, 5841), (4307, 4653)]