20428020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113489}}^1$

素因数の和:113504

約数の個数: 36

約数和(自身を含む): 61965540

約数和(自身を除く): 41537520

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 113489, 226978, 340467, 453956, 567445, 680934, 1021401, 1134890, 1361868, 1702335, 2042802, 2269780, 3404670, 4085604, 5107005, 6809340, 10214010, 20428020]

約数ペア:

[(1, 20428020), (2, 10214010), (3, 6809340), (4, 5107005), (5, 4085604), (6, 3404670), (9, 2269780), (10, 2042802), (12, 1702335), (15, 1361868), (18, 1134890), (20, 1021401), (30, 680934), (36, 567445), (45, 453956), (60, 340467), (90, 226978), (180, 113489)]