21791565

素因数分解:

$3^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1069}}^1$

素因数の和:1234

約数の個数: 32

約数和(自身を含む): 39033600

約数和(自身を除く): 17242035

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 151, 453, 755, 1069, 1359, 2265, 3207, 4077, 5345, 6795, 9621, 16035, 20385, 28863, 48105, 144315, 161419, 484257, 807095, 1452771, 2421285, 4358313, 7263855, 21791565]

約数ペア:

[(1, 21791565), (3, 7263855), (5, 4358313), (9, 2421285), (15, 1452771), (27, 807095), (45, 484257), (135, 161419), (151, 144315), (453, 48105), (755, 28863), (1069, 20385), (1359, 16035), (2265, 9621), (3207, 6795), (4077, 5345)]