21719691

素因数分解:

$3^3\times 7^2\times {\mathrm{16417}}^1$

素因数の和:16440

約数の個数: 24

約数和(自身を含む): 37433040

約数和(自身を除く): 15713349

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 16417, 49251, 114919, 147753, 344757, 443259, 804433, 1034271, 2413299, 3102813, 7239897, 21719691]

約数ペア:

[(1, 21719691), (3, 7239897), (7, 3102813), (9, 2413299), (21, 1034271), (27, 804433), (49, 443259), (63, 344757), (147, 147753), (189, 114919), (441, 49251), (1323, 16417)]