20512980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37987}}^1$

素因数の和:38005

約数の個数: 48

約数和(自身を含む): 63819840

約数和(自身を除く): 43306860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 37987, 75974, 113961, 151948, 189935, 227922, 341883, 379870, 455844, 569805, 683766, 759740, 1025649, 1139610, 1367532, 1709415, 2051298, 2279220, 3418830, 4102596, 5128245, 6837660, 10256490, 20512980]

約数ペア:

[(1, 20512980), (2, 10256490), (3, 6837660), (4, 5128245), (5, 4102596), (6, 3418830), (9, 2279220), (10, 2051298), (12, 1709415), (15, 1367532), (18, 1139610), (20, 1025649), (27, 759740), (30, 683766), (36, 569805), (45, 455844), (54, 379870), (60, 341883), (90, 227922), (108, 189935), (135, 151948), (180, 113961), (270, 75974), (540, 37987)]