20561705

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5279}}^1$

素因数の和:5344

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 6049495

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5279, 26395, 100301, 216439, 501505, 1082195, 4112341, 20561705]

約数ペア:

[(1, 20561705), (5, 4112341), (19, 1082195), (41, 501505), (95, 216439), (205, 100301), (779, 26395), (3895, 5279)]