213068779

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1\times {\mathrm{2351}}^1$

素因数の和:2487

約数の個数: 24

約数和(自身を含む): 270273024

約数和(自身を除く): 57204245

約数列:

[1, 7, 11, 77, 107, 121, 749, 847, 1177, 2351, 8239, 12947, 16457, 25861, 90629, 181027, 251557, 284471, 1760899, 1991297, 2767127, 19369889, 30438397, 213068779]

約数ペア:

[(1, 213068779), (7, 30438397), (11, 19369889), (77, 2767127), (107, 1991297), (121, 1760899), (749, 284471), (847, 251557), (1177, 181027), (2351, 90629), (8239, 25861), (12947, 16457)]