20509011

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 11286189

約数列:

[1, 3, 9, 27, 31, 93, 107, 229, 279, 321, 687, 837, 963, 2061, 2889, 3317, 6183, 7099, 9951, 21297, 24503, 29853, 63891, 73509, 89559, 191673, 220527, 661581, 759593, 2278779, 6836337, 20509011]

約数ペア:

[(1, 20509011), (3, 6836337), (9, 2278779), (27, 759593), (31, 661581), (93, 220527), (107, 191673), (229, 89559), (279, 73509), (321, 63891), (687, 29853), (837, 24503), (963, 21297), (2061, 9951), (2889, 7099), (3317, 6183)]