21379863

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13523}}^1$

素因数の和:13574

約数の個数: 16

約数和(自身を含む): 31159296

約数和(自身を除く): 9779433

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13523, 40569, 229891, 419213, 689673, 1257639, 7126621, 21379863]

約数ペア:

[(1, 21379863), (3, 7126621), (17, 1257639), (31, 689673), (51, 419213), (93, 229891), (527, 40569), (1581, 13523)]