19660040

素因数分解:

$2^3\times 5^1\times {\mathrm{491501}}^1$

素因数の和:491512

約数の個数: 16

約数和(自身を含む): 44235180

約数和(自身を除く): 24575140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491501, 983002, 1966004, 2457505, 3932008, 4915010, 9830020, 19660040]

約数ペア:

[(1, 19660040), (2, 9830020), (4, 4915010), (5, 3932008), (8, 2457505), (10, 1966004), (20, 983002), (40, 491501)]