20696655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{449}}^1$

素因数の和:903

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 17319345

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 439, 449, 1317, 1347, 2195, 2245, 3073, 3143, 6585, 6735, 9219, 9429, 15365, 15715, 46095, 47145, 197111, 591333, 985555, 1379777, 2956665, 4139331, 6898885, 20696655]

約数ペア:

[(1, 20696655), (3, 6898885), (5, 4139331), (7, 2956665), (15, 1379777), (21, 985555), (35, 591333), (105, 197111), (439, 47145), (449, 46095), (1317, 15715), (1347, 15365), (2195, 9429), (2245, 9219), (3073, 6735), (3143, 6585)]