19927120

素因数分解:

$2^4\times 5^1\times {\mathrm{249089}}^1$

素因数の和:249102

約数の個数: 20

約数和(自身を含む): 46330740

約数和(自身を除く): 26403620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249089, 498178, 996356, 1245445, 1992712, 2490890, 3985424, 4981780, 9963560, 19927120]

約数ペア:

[(1, 19927120), (2, 9963560), (4, 4981780), (5, 3985424), (8, 2490890), (10, 1992712), (16, 1245445), (20, 996356), (40, 498178), (80, 249089)]