20684295

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 39070080

約数和(自身を除く): 18385785

約数列:

[1, 3, 5, 9, 15, 27, 37, 41, 45, 101, 111, 123, 135, 185, 205, 303, 333, 369, 505, 555, 615, 909, 999, 1107, 1515, 1517, 1665, 1845, 2727, 3737, 4141, 4545, 4551, 4995, 5535, 7585, 11211, 12423, 13635, 13653, 18685, 20705, 22755, 33633, 37269, 40959, 56055, 62115, 68265, 100899, 111807, 153217, 168165, 186345, 204795, 459651, 504495, 559035, 766085, 1378953, 2298255, 4136859, 6894765, 20684295]

約数ペア:

[(1, 20684295), (3, 6894765), (5, 4136859), (9, 2298255), (15, 1378953), (27, 766085), (37, 559035), (41, 504495), (45, 459651), (101, 204795), (111, 186345), (123, 168165), (135, 153217), (185, 111807), (205, 100899), (303, 68265), (333, 62115), (369, 56055), (505, 40959), (555, 37269), (615, 33633), (909, 22755), (999, 20705), (1107, 18685), (1515, 13653), (1517, 13635), (1665, 12423), (1845, 11211), (2727, 7585), (3737, 5535), (4141, 4995), (4545, 4551)]