21492021

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{12163}}^1$

素因数の和:12216

約数の個数: 16

約数和(自身を含む): 31139840

約数和(自身を除く): 9647819

約数列:

[1, 3, 19, 31, 57, 93, 589, 1767, 12163, 36489, 231097, 377053, 693291, 1131159, 7164007, 21492021]

約数ペア:

[(1, 21492021), (3, 7164007), (19, 1131159), (31, 693291), (57, 377053), (93, 231097), (589, 36489), (1767, 12163)]