21747891

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{4423}}^1$

素因数の和:4586

約数の個数: 16

約数和(自身を含む): 31852800

約数和(自身を除く): 10104909

約数列:

[1, 3, 11, 33, 149, 447, 1639, 4423, 4917, 13269, 48653, 145959, 659027, 1977081, 7249297, 21747891]

約数ペア:

[(1, 21747891), (3, 7249297), (11, 1977081), (33, 659027), (149, 145959), (447, 48653), (1639, 13269), (4423, 4917)]