20426985

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1627}}^1$

素因数の和:1675

約数の個数: 40

約数和(自身を含む): 37821696

約数和(自身を除く): 17394711

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1627, 2511, 4185, 4881, 8135, 12555, 14643, 24405, 43929, 50437, 73215, 131787, 151311, 219645, 252185, 453933, 658935, 756555, 1361799, 2269665, 4085397, 6808995, 20426985]

約数ペア:

[(1, 20426985), (3, 6808995), (5, 4085397), (9, 2269665), (15, 1361799), (27, 756555), (31, 658935), (45, 453933), (81, 252185), (93, 219645), (135, 151311), (155, 131787), (279, 73215), (405, 50437), (465, 43929), (837, 24405), (1395, 14643), (1627, 12555), (2511, 8135), (4185, 4881)]