19841985

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1062

約数の個数: 48

約数和(自身を含む): 37814400

約数和(自身を除く): 17972415

約数列:

[1, 3, 5, 9, 15, 19, 23, 45, 57, 69, 95, 115, 171, 207, 285, 345, 437, 855, 1009, 1035, 1311, 2185, 3027, 3933, 5045, 6555, 9081, 15135, 19171, 19665, 23207, 45405, 57513, 69621, 95855, 116035, 172539, 208863, 287565, 348105, 440933, 862695, 1044315, 1322799, 2204665, 3968397, 6613995, 19841985]

約数ペア:

[(1, 19841985), (3, 6613995), (5, 3968397), (9, 2204665), (15, 1322799), (19, 1044315), (23, 862695), (45, 440933), (57, 348105), (69, 287565), (95, 208863), (115, 172539), (171, 116035), (207, 95855), (285, 69621), (345, 57513), (437, 45405), (855, 23207), (1009, 19665), (1035, 19171), (1311, 15135), (2185, 9081), (3027, 6555), (3933, 5045)]