21154449

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1\times {\mathrm{307}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 28700672

約数和(自身を除く): 7546223

約数列:

[1, 3, 103, 223, 307, 309, 669, 921, 22969, 31621, 68461, 68907, 94863, 205383, 7051483, 21154449]

約数ペア:

[(1, 21154449), (3, 7051483), (103, 205383), (223, 94863), (307, 68907), (309, 68461), (669, 31621), (921, 22969)]