3998890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{8161}}^1$

素因数の和:8182

約数の個数: 24

約数和(自身を含む): 8374212

約数和(自身を除く): 4375322

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 8161, 16322, 40805, 57127, 81610, 114254, 285635, 399889, 571270, 799778, 1999445, 3998890]

約数ペア:

[(1, 3998890), (2, 1999445), (5, 799778), (7, 571270), (10, 399889), (14, 285635), (35, 114254), (49, 81610), (70, 57127), (98, 40805), (245, 16322), (490, 8161)]