21591003

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{307}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 35126784

約数和(自身を除く): 13535781

約数列:

[1, 3, 7, 17, 21, 51, 119, 197, 307, 357, 591, 921, 1379, 2149, 3349, 4137, 5219, 6447, 10047, 15657, 23443, 36533, 60479, 70329, 109599, 181437, 423353, 1028143, 1270059, 3084429, 7197001, 21591003]

約数ペア:

[(1, 21591003), (3, 7197001), (7, 3084429), (17, 1270059), (21, 1028143), (51, 423353), (119, 181437), (197, 109599), (307, 70329), (357, 60479), (591, 36533), (921, 23443), (1379, 15657), (2149, 10047), (3349, 6447), (4137, 5219)]