21263265

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3607}}^1$

素因数の和:3749

約数の個数: 24

約数和(自身を含む): 37147968

約数和(自身を除く): 15884703

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3607, 5895, 10821, 18035, 32463, 54105, 162315, 472517, 1417551, 2362585, 4252653, 7087755, 21263265]

約数ペア:

[(1, 21263265), (3, 7087755), (5, 4252653), (9, 2362585), (15, 1417551), (45, 472517), (131, 162315), (393, 54105), (655, 32463), (1179, 18035), (1965, 10821), (3607, 5895)]