21686518

素因数分解:

$2^1\times 7^3\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 38433600

約数和(自身を除く): 16747082

約数列:

[1, 2, 7, 14, 49, 98, 101, 202, 313, 343, 626, 686, 707, 1414, 2191, 4382, 4949, 9898, 15337, 30674, 31613, 34643, 63226, 69286, 107359, 214718, 221291, 442582, 1549037, 3098074, 10843259, 21686518]

約数ペア:

[(1, 21686518), (2, 10843259), (7, 3098074), (14, 1549037), (49, 442582), (98, 221291), (101, 214718), (202, 107359), (313, 69286), (343, 63226), (626, 34643), (686, 31613), (707, 30674), (1414, 15337), (2191, 9898), (4382, 4949)]