640041687

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{2153}}^1$

素因数の和:2272

約数の個数: 48

約数和(自身を含む): 1028233440

約数和(自身を除く): 388191753

約数列:

[1, 3, 9, 17, 29, 51, 67, 87, 153, 201, 261, 493, 603, 1139, 1479, 1943, 2153, 3417, 4437, 5829, 6459, 10251, 17487, 19377, 33031, 36601, 62437, 99093, 109803, 144251, 187311, 297279, 329409, 432753, 561933, 1061429, 1298259, 2452267, 3184287, 4183279, 7356801, 9552861, 12549837, 22070403, 37649511, 71115743, 213347229, 640041687]

約数ペア:

[(1, 640041687), (3, 213347229), (9, 71115743), (17, 37649511), (29, 22070403), (51, 12549837), (67, 9552861), (87, 7356801), (153, 4183279), (201, 3184287), (261, 2452267), (493, 1298259), (603, 1061429), (1139, 561933), (1479, 432753), (1943, 329409), (2153, 297279), (3417, 187311), (4437, 144251), (5829, 109803), (6459, 99093), (10251, 62437), (17487, 36601), (19377, 33031)]