640706616

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^2\times {\mathrm{251}}^1\times {\mathrm{293}}^1$

素因数の和:578

約数の個数: 144

約数和(自身を含む): 1921472280

約数和(自身を除く): 1280765664

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 66, 72, 88, 99, 121, 132, 198, 242, 251, 264, 293, 363, 396, 484, 502, 586, 726, 753, 792, 879, 968, 1004, 1089, 1172, 1452, 1506, 1758, 2008, 2178, 2259, 2344, 2637, 2761, 2904, 3012, 3223, 3516, 4356, 4518, 5274, 5522, 6024, 6446, 7032, 8283, 8712, 9036, 9669, 10548, 11044, 12892, 16566, 18072, 19338, 21096, 22088, 24849, 25784, 29007, 30371, 33132, 35453, 38676, 49698, 58014, 60742, 66264, 70906, 73543, 77352, 91113, 99396, 106359, 116028, 121484, 141812, 147086, 182226, 198792, 212718, 220629, 232056, 242968, 273339, 283624, 294172, 319077, 364452, 425436, 441258, 546678, 588344, 638154, 661887, 728904, 808973, 850872, 882516, 1093356, 1276308, 1323774, 1617946, 1765032, 2186712, 2426919, 2552616, 2647548, 3235892, 4853838, 5295096, 6471784, 7280757, 8898703, 9707676, 14561514, 17797406, 19415352, 26696109, 29123028, 35594812, 53392218, 58246056, 71189624, 80088327, 106784436, 160176654, 213568872, 320353308, 640706616]

約数ペア:

[(1, 640706616), (2, 320353308), (3, 213568872), (4, 160176654), (6, 106784436), (8, 80088327), (9, 71189624), (11, 58246056), (12, 53392218), (18, 35594812), (22, 29123028), (24, 26696109), (33, 19415352), (36, 17797406), (44, 14561514), (66, 9707676), (72, 8898703), (88, 7280757), (99, 6471784), (121, 5295096), (132, 4853838), (198, 3235892), (242, 2647548), (251, 2552616), (264, 2426919), (293, 2186712), (363, 1765032), (396, 1617946), (484, 1323774), (502, 1276308), (586, 1093356), (726, 882516), (753, 850872), (792, 808973), (879, 728904), (968, 661887), (1004, 638154), (1089, 588344), (1172, 546678), (1452, 441258), (1506, 425436), (1758, 364452), (2008, 319077), (2178, 294172), (2259, 283624), (2344, 273339), (2637, 242968), (2761, 232056), (2904, 220629), (3012, 212718), (3223, 198792), (3516, 182226), (4356, 147086), (4518, 141812), (5274, 121484), (5522, 116028), (6024, 106359), (6446, 99396), (7032, 91113), (8283, 77352), (8712, 73543), (9036, 70906), (9669, 66264), (10548, 60742), (11044, 58014), (12892, 49698), (16566, 38676), (18072, 35453), (19338, 33132), (21096, 30371), (22088, 29007), (24849, 25784)]