19440405

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2087}}^1$

素因数の和:2127

約数の個数: 40

約数和(自身を含む): 36381312

約数和(自身を除く): 16940907

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2087, 3105, 6261, 9315, 10435, 18783, 31305, 48001, 56349, 93915, 144003, 169047, 240005, 281745, 432009, 720015, 845235, 1296027, 2160045, 3888081, 6480135, 19440405]

約数ペア:

[(1, 19440405), (3, 6480135), (5, 3888081), (9, 2160045), (15, 1296027), (23, 845235), (27, 720015), (45, 432009), (69, 281745), (81, 240005), (115, 169047), (135, 144003), (207, 93915), (345, 56349), (405, 48001), (621, 31305), (1035, 18783), (1863, 10435), (2087, 9315), (3105, 6261)]