21371889

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13217}}^1$

素因数の和:13245

約数の個数: 24

約数和(自身を含む): 36164448

約数和(自身を除く): 14792559

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13217, 39651, 92519, 145387, 277557, 436161, 647633, 1017709, 1942899, 3053127, 7123963, 21371889]

約数ペア:

[(1, 21371889), (3, 7123963), (7, 3053127), (11, 1942899), (21, 1017709), (33, 647633), (49, 436161), (77, 277557), (147, 145387), (231, 92519), (539, 39651), (1617, 13217)]