19577420

素因数分解:

$2^2\times 5^1\times {\mathrm{978871}}^1$

素因数の和:978880

約数の個数: 12

約数和(自身を含む): 41112624

約数和(自身を除く): 21535204

約数列:

[1, 2, 4, 5, 10, 20, 978871, 1957742, 3915484, 4894355, 9788710, 19577420]

約数ペア:

[(1, 19577420), (2, 9788710), (4, 4894355), (5, 3915484), (10, 1957742), (20, 978871)]