20157368

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{761}}^1$

素因数の和:828

約数の個数: 64

約数和(自身を含む): 48280320

約数和(自身を除く): 28122952

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 43, 44, 56, 77, 86, 88, 154, 172, 301, 308, 344, 473, 602, 616, 761, 946, 1204, 1522, 1892, 2408, 3044, 3311, 3784, 5327, 6088, 6622, 8371, 10654, 13244, 16742, 21308, 26488, 32723, 33484, 42616, 58597, 65446, 66968, 117194, 130892, 229061, 234388, 261784, 359953, 458122, 468776, 719906, 916244, 1439812, 1832488, 2519671, 2879624, 5039342, 10078684, 20157368]

約数ペア:

[(1, 20157368), (2, 10078684), (4, 5039342), (7, 2879624), (8, 2519671), (11, 1832488), (14, 1439812), (22, 916244), (28, 719906), (43, 468776), (44, 458122), (56, 359953), (77, 261784), (86, 234388), (88, 229061), (154, 130892), (172, 117194), (301, 66968), (308, 65446), (344, 58597), (473, 42616), (602, 33484), (616, 32723), (761, 26488), (946, 21308), (1204, 16742), (1522, 13244), (1892, 10654), (2408, 8371), (3044, 6622), (3311, 6088), (3784, 5327)]