21138117

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7039}}^1$

素因数の和:7073

約数の個数: 32

約数和(自身を含む): 37847040

約数和(自身を除く): 16708923

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 7039, 21117, 49273, 77429, 91507, 147819, 232287, 274521, 542003, 640549, 1006577, 1626009, 1921647, 3019731, 7046039, 21138117]

約数ペア:

[(1, 21138117), (3, 7046039), (7, 3019731), (11, 1921647), (13, 1626009), (21, 1006577), (33, 640549), (39, 542003), (77, 274521), (91, 232287), (143, 147819), (231, 91507), (273, 77429), (429, 49273), (1001, 21117), (3003, 7039)]