21083307

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 12591957

約数列:

[1, 3, 7, 21, 41, 47, 123, 141, 287, 329, 521, 861, 987, 1563, 1927, 3647, 5781, 10941, 13489, 21361, 24487, 40467, 64083, 73461, 149527, 171409, 448581, 514227, 1003967, 3011901, 7027769, 21083307]

約数ペア:

[(1, 21083307), (3, 7027769), (7, 3011901), (21, 1003967), (41, 514227), (47, 448581), (123, 171409), (141, 149527), (287, 73461), (329, 64083), (521, 40467), (861, 24487), (987, 21361), (1563, 13489), (1927, 10941), (3647, 5781)]