21705804

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1223}}^1$

素因数の和:1279

約数の個数: 72

約数和(自身を含む): 60147360

約数和(自身を除く): 38441556

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 29, 34, 36, 51, 58, 68, 87, 102, 116, 153, 174, 204, 261, 306, 348, 493, 522, 612, 986, 1044, 1223, 1479, 1972, 2446, 2958, 3669, 4437, 4892, 5916, 7338, 8874, 11007, 14676, 17748, 20791, 22014, 35467, 41582, 44028, 62373, 70934, 83164, 106401, 124746, 141868, 187119, 212802, 249492, 319203, 374238, 425604, 602939, 638406, 748476, 1205878, 1276812, 1808817, 2411756, 3617634, 5426451, 7235268, 10852902, 21705804]

約数ペア:

[(1, 21705804), (2, 10852902), (3, 7235268), (4, 5426451), (6, 3617634), (9, 2411756), (12, 1808817), (17, 1276812), (18, 1205878), (29, 748476), (34, 638406), (36, 602939), (51, 425604), (58, 374238), (68, 319203), (87, 249492), (102, 212802), (116, 187119), (153, 141868), (174, 124746), (204, 106401), (261, 83164), (306, 70934), (348, 62373), (493, 44028), (522, 41582), (612, 35467), (986, 22014), (1044, 20791), (1223, 17748), (1479, 14676), (1972, 11007), (2446, 8874), (2958, 7338), (3669, 5916), (4437, 4892)]