20751780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49409}}^1$

素因数の和:49428

約数の個数: 48

約数和(自身を含む): 66407040

約数和(自身を除く): 45655260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49409, 98818, 148227, 197636, 247045, 296454, 345863, 494090, 592908, 691726, 741135, 988180, 1037589, 1383452, 1482270, 1729315, 2075178, 2964540, 3458630, 4150356, 5187945, 6917260, 10375890, 20751780]

約数ペア:

[(1, 20751780), (2, 10375890), (3, 6917260), (4, 5187945), (5, 4150356), (6, 3458630), (7, 2964540), (10, 2075178), (12, 1729315), (14, 1482270), (15, 1383452), (20, 1037589), (21, 988180), (28, 741135), (30, 691726), (35, 592908), (42, 494090), (60, 345863), (70, 296454), (84, 247045), (105, 197636), (140, 148227), (210, 98818), (420, 49409)]