21109988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16339}}^1$

素因数の和:16379

約数の個数: 24

約数和(自身を含む): 41176800

約数和(自身を除く): 20066812

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16339, 32678, 65356, 277763, 310441, 555526, 620882, 1111052, 1241764, 5277497, 10554994, 21109988]

約数ペア:

[(1, 21109988), (2, 10554994), (4, 5277497), (17, 1241764), (19, 1111052), (34, 620882), (38, 555526), (68, 310441), (76, 277763), (323, 65356), (646, 32678), (1292, 16339)]