20611760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19819}}^1$

素因数の和:19845

約数の個数: 40

約数和(自身を含む): 51611280

約数和(自身を除く): 30999520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19819, 39638, 79276, 99095, 158552, 198190, 257647, 317104, 396380, 515294, 792760, 1030588, 1288235, 1585520, 2061176, 2576470, 4122352, 5152940, 10305880, 20611760]

約数ペア:

[(1, 20611760), (2, 10305880), (4, 5152940), (5, 4122352), (8, 2576470), (10, 2061176), (13, 1585520), (16, 1288235), (20, 1030588), (26, 792760), (40, 515294), (52, 396380), (65, 317104), (80, 257647), (104, 198190), (130, 158552), (208, 99095), (260, 79276), (520, 39638), (1040, 19819)]