8903120

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1021}}^1$

素因数の和:1143

約数の個数: 40

約数和(自身を含む): 20910120

約数和(自身を除く): 12007000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1021, 1090, 1744, 2042, 2180, 4084, 4360, 5105, 8168, 8720, 10210, 16336, 20420, 40840, 81680, 111289, 222578, 445156, 556445, 890312, 1112890, 1780624, 2225780, 4451560, 8903120]

約数ペア:

[(1, 8903120), (2, 4451560), (4, 2225780), (5, 1780624), (8, 1112890), (10, 890312), (16, 556445), (20, 445156), (40, 222578), (80, 111289), (109, 81680), (218, 40840), (436, 20420), (545, 16336), (872, 10210), (1021, 8720), (1090, 8168), (1744, 5105), (2042, 4360), (2180, 4084)]