21665378

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 42197760

約数和(自身を除く): 20532382

約数列:

[1, 2, 7, 14, 17, 29, 34, 43, 58, 73, 86, 119, 146, 203, 238, 301, 406, 493, 511, 602, 731, 986, 1022, 1241, 1247, 1462, 2117, 2482, 2494, 3139, 3451, 4234, 5117, 6278, 6902, 8687, 8729, 10234, 14819, 17374, 17458, 21199, 21973, 29638, 35989, 42398, 43946, 53363, 71978, 91031, 106726, 148393, 182062, 251923, 296786, 373541, 503846, 637217, 747082, 1274434, 1547527, 3095054, 10832689, 21665378]

約数ペア:

[(1, 21665378), (2, 10832689), (7, 3095054), (14, 1547527), (17, 1274434), (29, 747082), (34, 637217), (43, 503846), (58, 373541), (73, 296786), (86, 251923), (119, 182062), (146, 148393), (203, 106726), (238, 91031), (301, 71978), (406, 53363), (493, 43946), (511, 42398), (602, 35989), (731, 29638), (986, 21973), (1022, 21199), (1241, 17458), (1247, 17374), (1462, 14819), (2117, 10234), (2482, 8729), (2494, 8687), (3139, 6902), (3451, 6278), (4234, 5117)]