890530

素因数分解:

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

素因数の和:178

約数の個数: 32

約数和(自身を含む): 1742400

約数和(自身を除く): 851870

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 109, 190, 215, 218, 430, 545, 817, 1090, 1634, 2071, 4085, 4142, 4687, 8170, 9374, 10355, 20710, 23435, 46870, 89053, 178106, 445265, 890530]

約数ペア:

[(1, 890530), (2, 445265), (5, 178106), (10, 89053), (19, 46870), (38, 23435), (43, 20710), (86, 10355), (95, 9374), (109, 8170), (190, 4687), (215, 4142), (218, 4085), (430, 2071), (545, 1634), (817, 1090)]