15964921

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 21288960

約数和(自身を除く): 5324039

約数列:

[1, 7, 17, 19, 23, 119, 133, 161, 307, 323, 391, 437, 2149, 2261, 2737, 3059, 5219, 5833, 7061, 7429, 36533, 40831, 49427, 52003, 99161, 120037, 134159, 694127, 840259, 939113, 2280703, 15964921]

約数ペア:

[(1, 15964921), (7, 2280703), (17, 939113), (19, 840259), (23, 694127), (119, 134159), (133, 120037), (161, 99161), (307, 52003), (323, 49427), (391, 40831), (437, 36533), (2149, 7429), (2261, 7061), (2737, 5833), (3059, 5219)]