21686714

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{613}}^1$

素因数の和:667

約数の個数: 36

約数和(自身を含む): 40002714

約数和(自身を除く): 18316000

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 361, 613, 722, 931, 1226, 1862, 2527, 4291, 5054, 8582, 11647, 17689, 23294, 30037, 35378, 60074, 81529, 163058, 221293, 442586, 570703, 1141406, 1549051, 3098102, 10843357, 21686714]

約数ペア:

[(1, 21686714), (2, 10843357), (7, 3098102), (14, 1549051), (19, 1141406), (38, 570703), (49, 442586), (98, 221293), (133, 163058), (266, 81529), (361, 60074), (613, 35378), (722, 30037), (931, 23294), (1226, 17689), (1862, 11647), (2527, 8582), (4291, 5054)]