19680097960

素因数分解:

$2^3\times 5^1\times {\mathrm{3637}}^1\times {\mathrm{135277}}^1$

素因数の和:138925

約数の個数: 32

約数和(自身を含む): 44292722760

約数和(自身を除く): 24612624800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3637, 7274, 14548, 18185, 29096, 36370, 72740, 135277, 145480, 270554, 541108, 676385, 1082216, 1352770, 2705540, 5411080, 492002449, 984004898, 1968009796, 2460012245, 3936019592, 4920024490, 9840048980, 19680097960]

約数ペア:

[(1, 19680097960), (2, 9840048980), (4, 4920024490), (5, 3936019592), (8, 2460012245), (10, 1968009796), (20, 984004898), (40, 492002449), (3637, 5411080), (7274, 2705540), (14548, 1352770), (18185, 1082216), (29096, 676385), (36370, 541108), (72740, 270554), (135277, 145480)]