1781060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 4065600

約数和(自身を除く): 2284540

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 109, 172, 190, 215, 218, 380, 430, 436, 545, 817, 860, 1090, 1634, 2071, 2180, 3268, 4085, 4142, 4687, 8170, 8284, 9374, 10355, 16340, 18748, 20710, 23435, 41420, 46870, 89053, 93740, 178106, 356212, 445265, 890530, 1781060]

約数ペア:

[(1, 1781060), (2, 890530), (4, 445265), (5, 356212), (10, 178106), (19, 93740), (20, 89053), (38, 46870), (43, 41420), (76, 23435), (86, 20710), (95, 18748), (109, 16340), (172, 10355), (190, 9374), (215, 8284), (218, 8170), (380, 4687), (430, 4142), (436, 4085), (545, 3268), (817, 2180), (860, 2071), (1090, 1634)]