21075784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4999}}^1$

素因数の和:5053

約数の個数: 32

約数和(自身を含む): 43200000

約数和(自身を除く): 22124216

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4999, 9998, 19996, 39992, 84983, 154969, 169966, 309938, 339932, 619876, 679864, 1239752, 2634473, 5268946, 10537892, 21075784]

約数ペア:

[(1, 21075784), (2, 10537892), (4, 5268946), (8, 2634473), (17, 1239752), (31, 679864), (34, 619876), (62, 339932), (68, 309938), (124, 169966), (136, 154969), (248, 84983), (527, 39992), (1054, 19996), (2108, 9998), (4216, 4999)]