19869215

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{941}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 24687936

約数和(自身を除く): 4818721

約数列:

[1, 5, 41, 103, 205, 515, 941, 4223, 4705, 21115, 38581, 96923, 192905, 484615, 3973843, 19869215]

約数ペア:

[(1, 19869215), (5, 3973843), (41, 484615), (103, 192905), (205, 96923), (515, 38581), (941, 21115), (4223, 4705)]