20553915

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1759}}^1$

素因数の和:1827

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 14927685

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 285, 615, 779, 1759, 2337, 3895, 5277, 8795, 11685, 26385, 33421, 72119, 100263, 167105, 216357, 360595, 501315, 1081785, 1370261, 4110783, 6851305, 20553915]

約数ペア:

[(1, 20553915), (3, 6851305), (5, 4110783), (15, 1370261), (19, 1081785), (41, 501315), (57, 360595), (95, 216357), (123, 167105), (205, 100263), (285, 72119), (615, 33421), (779, 26385), (1759, 11685), (2337, 8795), (3895, 5277)]