20490540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{48787}}^1$

素因数の和:48806

約数の個数: 48

約数和(自身を含む): 65571072

約数和(自身を除く): 45080532

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, 48787, 97574, 146361, 195148, 243935, 292722, 341509, 487870, 585444, 683018, 731805, 975740, 1024527, 1366036, 1463610, 1707545, 2049054, 2927220, 3415090, 4098108, 5122635, 6830180, 10245270, 20490540]

約数ペア:

[(1, 20490540), (2, 10245270), (3, 6830180), (4, 5122635), (5, 4098108), (6, 3415090), (7, 2927220), (10, 2049054), (12, 1707545), (14, 1463610), (15, 1366036), (20, 1024527), (21, 975740), (28, 731805), (30, 683018), (35, 585444), (42, 487870), (60, 341509), (70, 292722), (84, 243935), (105, 195148), (140, 146361), (210, 97574), (420, 48787)]