20013945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4649}}^1$

素因数の和:4705

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 17483655

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 4649, 13947, 23245, 32543, 69735, 97629, 162715, 190609, 488145, 571827, 953045, 1334263, 2859135, 4002789, 6671315, 20013945]

約数ペア:

[(1, 20013945), (3, 6671315), (5, 4002789), (7, 2859135), (15, 1334263), (21, 953045), (35, 571827), (41, 488145), (105, 190609), (123, 162715), (205, 97629), (287, 69735), (615, 32543), (861, 23245), (1435, 13947), (4305, 4649)]