21301623

素因数分解:

$3^5\times 7^2\times {\mathrm{1789}}^1$

素因数の和:1818

約数の個数: 36

約数和(自身を含む): 37138920

約数和(自身を除く): 15837297

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1701, 1789, 3969, 5367, 11907, 12523, 16101, 37569, 48303, 87661, 112707, 144909, 262983, 338121, 434727, 788949, 1014363, 2366847, 3043089, 7100541, 21301623]

約数ペア:

[(1, 21301623), (3, 7100541), (7, 3043089), (9, 2366847), (21, 1014363), (27, 788949), (49, 434727), (63, 338121), (81, 262983), (147, 144909), (189, 112707), (243, 87661), (441, 48303), (567, 37569), (1323, 16101), (1701, 12523), (1789, 11907), (3969, 5367)]