21041812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{6551}}^1$

素因数の和:6639

約数の個数: 24

約数和(自身を含む): 40727232

約数和(自身を除く): 19685420

約数列:

[1, 2, 4, 11, 22, 44, 73, 146, 292, 803, 1606, 3212, 6551, 13102, 26204, 72061, 144122, 288244, 478223, 956446, 1912892, 5260453, 10520906, 21041812]

約数ペア:

[(1, 21041812), (2, 10520906), (4, 5260453), (11, 1912892), (22, 956446), (44, 478223), (73, 288244), (146, 144122), (292, 72061), (803, 26204), (1606, 13102), (3212, 6551)]