20641180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2417}}^1$

素因数の和:2494

約数の個数: 48

約数和(自身を含む): 50371776

約数和(自身を除く): 29730596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2417, 4270, 4834, 8540, 9668, 12085, 16919, 24170, 33838, 48340, 67676, 84595, 147437, 169190, 294874, 338380, 589748, 737185, 1032059, 1474370, 2064118, 2948740, 4128236, 5160295, 10320590, 20641180]

約数ペア:

[(1, 20641180), (2, 10320590), (4, 5160295), (5, 4128236), (7, 2948740), (10, 2064118), (14, 1474370), (20, 1032059), (28, 737185), (35, 589748), (61, 338380), (70, 294874), (122, 169190), (140, 147437), (244, 84595), (305, 67676), (427, 48340), (610, 33838), (854, 24170), (1220, 16919), (1708, 12085), (2135, 9668), (2417, 8540), (4270, 4834)]