20729540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{6133}}^1$

素因数の和:6168

約数の個数: 36

約数和(自身を含む): 47145924

約数和(自身を除く): 26416384

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 6133, 12266, 24532, 30665, 61330, 79729, 122660, 159458, 318916, 398645, 797290, 1036477, 1594580, 2072954, 4145908, 5182385, 10364770, 20729540]

約数ペア:

[(1, 20729540), (2, 10364770), (4, 5182385), (5, 4145908), (10, 2072954), (13, 1594580), (20, 1036477), (26, 797290), (52, 398645), (65, 318916), (130, 159458), (169, 122660), (260, 79729), (338, 61330), (676, 30665), (845, 24532), (1690, 12266), (3380, 6133)]