18454960

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1171}}^1$

素因数の和:1381

約数の個数: 40

約数和(自身を含む): 43162416

約数和(自身を除く): 24707456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1171, 1576, 1970, 2342, 3152, 3940, 4684, 5855, 7880, 9368, 11710, 15760, 18736, 23420, 46840, 93680, 230687, 461374, 922748, 1153435, 1845496, 2306870, 3690992, 4613740, 9227480, 18454960]

約数ペア:

[(1, 18454960), (2, 9227480), (4, 4613740), (5, 3690992), (8, 2306870), (10, 1845496), (16, 1153435), (20, 922748), (40, 461374), (80, 230687), (197, 93680), (394, 46840), (788, 23420), (985, 18736), (1171, 15760), (1576, 11710), (1970, 9368), (2342, 7880), (3152, 5855), (3940, 4684)]