21680386

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{857}}^1$

素因数の和:1018

約数の個数: 32

約数和(自身を含む): 40360320

約数和(自身を除く): 18679934

約数列:

[1, 2, 7, 13, 14, 26, 91, 139, 182, 278, 857, 973, 1714, 1807, 1946, 3614, 5999, 11141, 11998, 12649, 22282, 25298, 77987, 119123, 155974, 238246, 833861, 1548599, 1667722, 3097198, 10840193, 21680386]

約数ペア:

[(1, 21680386), (2, 10840193), (7, 3097198), (13, 1667722), (14, 1548599), (26, 833861), (91, 238246), (139, 155974), (182, 119123), (278, 77987), (857, 25298), (973, 22282), (1714, 12649), (1807, 11998), (1946, 11141), (3614, 5999)]