20826513

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4391}}^1$

素因数の和:4445

約数の個数: 24

約数和(自身を含む): 32887296

約数和(自身を除く): 12060783

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 4391, 4743, 13173, 39519, 74647, 136121, 223941, 408363, 671823, 1225089, 2314057, 6942171, 20826513]

約数ペア:

[(1, 20826513), (3, 6942171), (9, 2314057), (17, 1225089), (31, 671823), (51, 408363), (93, 223941), (153, 136121), (279, 74647), (527, 39519), (1581, 13173), (4391, 4743)]