21508020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{119489}}^1$

素因数の和:119504

約数の個数: 36

約数和(自身を含む): 65241540

約数和(自身を除く): 43733520

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 119489, 238978, 358467, 477956, 597445, 716934, 1075401, 1194890, 1433868, 1792335, 2150802, 2389780, 3584670, 4301604, 5377005, 7169340, 10754010, 21508020]

約数ペア:

[(1, 21508020), (2, 10754010), (3, 7169340), (4, 5377005), (5, 4301604), (6, 3584670), (9, 2389780), (10, 2150802), (12, 1792335), (15, 1433868), (18, 1194890), (20, 1075401), (30, 716934), (36, 597445), (45, 477956), (60, 358467), (90, 238978), (180, 119489)]