21115451

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:179

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5495749

約数列:

[1, 7, 29, 41, 43, 59, 203, 287, 301, 413, 1189, 1247, 1711, 1763, 2419, 2537, 8323, 8729, 11977, 12341, 16933, 17759, 51127, 70151, 73573, 104017, 357889, 491057, 515011, 728119, 3016493, 21115451]

約数ペア:

[(1, 21115451), (7, 3016493), (29, 728119), (41, 515011), (43, 491057), (59, 357889), (203, 104017), (287, 73573), (301, 70151), (413, 51127), (1189, 17759), (1247, 16933), (1711, 12341), (1763, 11977), (2419, 8729), (2537, 8323)]