21500901

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:465

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 10341819

約数列:

[1, 3, 9, 83, 107, 249, 269, 321, 747, 807, 963, 2421, 8881, 22327, 26643, 28783, 66981, 79929, 86349, 200943, 259047, 2388989, 7166967, 21500901]

約数ペア:

[(1, 21500901), (3, 7166967), (9, 2388989), (83, 259047), (107, 200943), (249, 86349), (269, 79929), (321, 66981), (747, 28783), (807, 26643), (963, 22327), (2421, 8881)]