20650050

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:548

約数の個数: 72

約数和(自身を含む): 56121780

約数和(自身を除く): 35471730

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 109, 150, 218, 225, 327, 421, 450, 545, 654, 842, 981, 1090, 1263, 1635, 1962, 2105, 2526, 2725, 3270, 3789, 4210, 4905, 5450, 6315, 7578, 8175, 9810, 10525, 12630, 16350, 18945, 21050, 24525, 31575, 37890, 45889, 49050, 63150, 91778, 94725, 137667, 189450, 229445, 275334, 413001, 458890, 688335, 826002, 1147225, 1376670, 2065005, 2294450, 3441675, 4130010, 6883350, 10325025, 20650050]

約数ペア:

[(1, 20650050), (2, 10325025), (3, 6883350), (5, 4130010), (6, 3441675), (9, 2294450), (10, 2065005), (15, 1376670), (18, 1147225), (25, 826002), (30, 688335), (45, 458890), (50, 413001), (75, 275334), (90, 229445), (109, 189450), (150, 137667), (218, 94725), (225, 91778), (327, 63150), (421, 49050), (450, 45889), (545, 37890), (654, 31575), (842, 24525), (981, 21050), (1090, 18945), (1263, 16350), (1635, 12630), (1962, 10525), (2105, 9810), (2526, 8175), (2725, 7578), (3270, 6315), (3789, 5450), (4210, 4905)]