990320

素因数分解:

$2^4\times 5^1\times {\mathrm{12379}}^1$

素因数の和:12392

約数の個数: 20

約数和(自身を含む): 2302680

約数和(自身を除く): 1312360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 12379, 24758, 49516, 61895, 99032, 123790, 198064, 247580, 495160, 990320]

約数ペア:

[(1, 990320), (2, 495160), (4, 247580), (5, 198064), (8, 123790), (10, 99032), (16, 61895), (20, 49516), (40, 24758), (80, 12379)]