20816488

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{719}}^1$

素因数の和:790

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28949912

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 47, 56, 77, 88, 94, 154, 188, 308, 329, 376, 517, 616, 658, 719, 1034, 1316, 1438, 2068, 2632, 2876, 3619, 4136, 5033, 5752, 7238, 7909, 10066, 14476, 15818, 20132, 28952, 31636, 33793, 40264, 55363, 63272, 67586, 110726, 135172, 221452, 236551, 270344, 371723, 442904, 473102, 743446, 946204, 1486892, 1892408, 2602061, 2973784, 5204122, 10408244, 20816488]

約数ペア:

[(1, 20816488), (2, 10408244), (4, 5204122), (7, 2973784), (8, 2602061), (11, 1892408), (14, 1486892), (22, 946204), (28, 743446), (44, 473102), (47, 442904), (56, 371723), (77, 270344), (88, 236551), (94, 221452), (154, 135172), (188, 110726), (308, 67586), (329, 63272), (376, 55363), (517, 40264), (616, 33793), (658, 31636), (719, 28952), (1034, 20132), (1316, 15818), (1438, 14476), (2068, 10066), (2632, 7909), (2876, 7238), (3619, 5752), (4136, 5033)]