19660120

素因数分解:

$2^3\times 5^1\times {\mathrm{491503}}^1$

素因数の和:491514

約数の個数: 16

約数和(自身を含む): 44235360

約数和(自身を除く): 24575240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491503, 983006, 1966012, 2457515, 3932024, 4915030, 9830060, 19660120]

約数ペア:

[(1, 19660120), (2, 9830060), (4, 4915030), (5, 3932024), (8, 2457515), (10, 1966012), (20, 983006), (40, 491503)]