21748797

素因数分解:

$3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{967}}^1$

素因数の和:1007

約数の個数: 48

約数和(自身を含む): 39726720

約数和(自身を除く): 17977923

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 119, 147, 153, 189, 357, 441, 459, 833, 967, 1071, 1323, 2499, 2901, 3213, 6769, 7497, 8703, 16439, 20307, 22491, 26109, 47383, 49317, 60921, 115073, 142149, 147951, 182763, 345219, 426447, 443853, 805511, 1035657, 1279341, 2416533, 3106971, 7249599, 21748797]

約数ペア:

[(1, 21748797), (3, 7249599), (7, 3106971), (9, 2416533), (17, 1279341), (21, 1035657), (27, 805511), (49, 443853), (51, 426447), (63, 345219), (119, 182763), (147, 147951), (153, 142149), (189, 115073), (357, 60921), (441, 49317), (459, 47383), (833, 26109), (967, 22491), (1071, 20307), (1323, 16439), (2499, 8703), (2901, 7497), (3213, 6769)]