4398040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2557}}^1$

素因数の和:2611

約数の個数: 32

約数和(自身を含む): 10129680

約数和(自身を除く): 5731640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 2557, 5114, 10228, 12785, 20456, 25570, 51140, 102280, 109951, 219902, 439804, 549755, 879608, 1099510, 2199020, 4398040]

約数ペア:

[(1, 4398040), (2, 2199020), (4, 1099510), (5, 879608), (8, 549755), (10, 439804), (20, 219902), (40, 109951), (43, 102280), (86, 51140), (172, 25570), (215, 20456), (344, 12785), (430, 10228), (860, 5114), (1720, 2557)]