21409979

素因数分解:

${\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:418

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 1918021

約数列:

[1, 19, 59, 71, 269, 1121, 1349, 4189, 5111, 15871, 19099, 79591, 301549, 362881, 1126841, 21409979]

約数ペア:

[(1, 21409979), (19, 1126841), (59, 362881), (71, 301549), (269, 79591), (1121, 19099), (1349, 15871), (4189, 5111)]