21054766

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{4783}}^1$

素因数の和:4887

約数の個数: 16

約数和(自身を含む): 33067008

約数和(自身を除く): 12012242

約数列:

[1, 2, 31, 62, 71, 142, 2201, 4402, 4783, 9566, 148273, 296546, 339593, 679186, 10527383, 21054766]

約数ペア:

[(1, 21054766), (2, 10527383), (31, 679186), (62, 339593), (71, 296546), (142, 148273), (2201, 9566), (4402, 4783)]