19898571

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 34320384

約数和(自身を除く): 14421813

約数列:

[1, 3, 7, 11, 21, 33, 41, 77, 121, 123, 191, 231, 287, 363, 451, 573, 847, 861, 1337, 1353, 2101, 2541, 3157, 4011, 4961, 6303, 7831, 9471, 14707, 14883, 23111, 23493, 34727, 44121, 54817, 69333, 86141, 104181, 161777, 164451, 258423, 485331, 602987, 947551, 1808961, 2842653, 6632857, 19898571]

約数ペア:

[(1, 19898571), (3, 6632857), (7, 2842653), (11, 1808961), (21, 947551), (33, 602987), (41, 485331), (77, 258423), (121, 164451), (123, 161777), (191, 104181), (231, 86141), (287, 69333), (363, 54817), (451, 44121), (573, 34727), (847, 23493), (861, 23111), (1337, 14883), (1353, 14707), (2101, 9471), (2541, 7831), (3157, 6303), (4011, 4961)]