21664484

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1447}}^1$

素因数の和:1667

約数の個数: 24

約数和(自身を含む): 40138560

約数和(自身を除く): 18474076

約数列:

[1, 2, 4, 19, 38, 76, 197, 394, 788, 1447, 2894, 3743, 5788, 7486, 14972, 27493, 54986, 109972, 285059, 570118, 1140236, 5416121, 10832242, 21664484]

約数ペア:

[(1, 21664484), (2, 10832242), (4, 5416121), (19, 1140236), (38, 570118), (76, 285059), (197, 109972), (394, 54986), (788, 27493), (1447, 14972), (2894, 7486), (3743, 5788)]