217709107

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7621}}^1$

素因数の和:7699

約数の個数: 24

約数和(自身を含む): 281526192

約数和(自身を除く): 63817085

約数列:

[1, 7, 11, 49, 53, 77, 371, 539, 583, 2597, 4081, 7621, 28567, 53347, 83831, 373429, 403913, 586817, 2827391, 4107719, 4443043, 19791737, 31101301, 217709107]

約数ペア:

[(1, 217709107), (7, 31101301), (11, 19791737), (49, 4443043), (53, 4107719), (77, 2827391), (371, 586817), (539, 403913), (583, 373429), (2597, 83831), (4081, 53347), (7621, 28567)]