20503465

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{1361}}^1$

素因数の和:1520

約数の個数: 16

約数和(自身を含む): 25888896

約数和(自身を除く): 5385431

約数列:

[1, 5, 23, 115, 131, 655, 1361, 3013, 6805, 15065, 31303, 156515, 178291, 891455, 4100693, 20503465]

約数ペア:

[(1, 20503465), (5, 4100693), (23, 891455), (115, 178291), (131, 156515), (655, 31303), (1361, 15065), (3013, 6805)]