21091543

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:175

約数の個数: 24

約数和(自身を含む): 25351056

約数和(自身を除く): 4259513

約数列:

[1, 11, 17, 43, 61, 187, 473, 671, 731, 1037, 1849, 2623, 8041, 11407, 20339, 28853, 31433, 44591, 112789, 345763, 490501, 1240679, 1917413, 21091543]

約数ペア:

[(1, 21091543), (11, 1917413), (17, 1240679), (43, 490501), (61, 345763), (187, 112789), (473, 44591), (671, 31433), (731, 28853), (1037, 20339), (1849, 11407), (2623, 8041)]