21658005

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 40173120

約数和(自身を除く): 18515115

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 73, 95, 171, 219, 285, 347, 365, 657, 855, 1041, 1095, 1387, 1735, 3123, 3285, 4161, 5205, 6593, 6935, 12483, 15615, 19779, 20805, 25331, 32965, 59337, 62415, 75993, 98895, 126655, 227979, 296685, 379965, 481289, 1139895, 1443867, 2406445, 4331601, 7219335, 21658005]

約数ペア:

[(1, 21658005), (3, 7219335), (5, 4331601), (9, 2406445), (15, 1443867), (19, 1139895), (45, 481289), (57, 379965), (73, 296685), (95, 227979), (171, 126655), (219, 98895), (285, 75993), (347, 62415), (365, 59337), (657, 32965), (855, 25331), (1041, 20805), (1095, 19779), (1387, 15615), (1735, 12483), (3123, 6935), (3285, 6593), (4161, 5205)]