8641840

素因数分解:

$2^4\times 5^1\times {\mathrm{108023}}^1$

素因数の和:108036

約数の個数: 20

約数和(自身を含む): 20092464

約数和(自身を除く): 11450624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 108023, 216046, 432092, 540115, 864184, 1080230, 1728368, 2160460, 4320920, 8641840]

約数ペア:

[(1, 8641840), (2, 4320920), (4, 2160460), (5, 1728368), (8, 1080230), (10, 864184), (16, 540115), (20, 432092), (40, 216046), (80, 108023)]