20867247

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:380

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 11480913

約数列:

[1, 3, 9, 27, 31, 93, 107, 233, 279, 321, 699, 837, 963, 2097, 2889, 3317, 6291, 7223, 9951, 21669, 24931, 29853, 65007, 74793, 89559, 195021, 224379, 673137, 772861, 2318583, 6955749, 20867247]

約数ペア:

[(1, 20867247), (3, 6955749), (9, 2318583), (27, 772861), (31, 673137), (93, 224379), (107, 195021), (233, 89559), (279, 74793), (321, 65007), (699, 29853), (837, 24931), (963, 21669), (2097, 9951), (2889, 7223), (3317, 6291)]