20413785

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{433}}^1\times {\mathrm{449}}^1$

素因数の和:897

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 17083815

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 433, 449, 1299, 1347, 2165, 2245, 3031, 3143, 6495, 6735, 9093, 9429, 15155, 15715, 45465, 47145, 194417, 583251, 972085, 1360919, 2916255, 4082757, 6804595, 20413785]

約数ペア:

[(1, 20413785), (3, 6804595), (5, 4082757), (7, 2916255), (15, 1360919), (21, 972085), (35, 583251), (105, 194417), (433, 47145), (449, 45465), (1299, 15715), (1347, 15155), (2165, 9429), (2245, 9093), (3031, 6735), (3143, 6495)]