721989008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2731}}^1$

素因数の和:2824

約数の個数: 80

約数和(自身を含む): 1593564672

約数和(自身を除く): 871575664

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 41, 52, 62, 82, 104, 124, 164, 208, 248, 328, 403, 496, 533, 656, 806, 1066, 1271, 1612, 2132, 2542, 2731, 3224, 4264, 5084, 5462, 6448, 8528, 10168, 10924, 16523, 20336, 21848, 33046, 35503, 43696, 66092, 71006, 84661, 111971, 132184, 142012, 169322, 223942, 264368, 284024, 338644, 447884, 568048, 677288, 895768, 1100593, 1354576, 1455623, 1791536, 2201186, 2911246, 3471101, 4402372, 5822492, 6942202, 8804744, 11644984, 13884404, 17609488, 23289968, 27768808, 45124313, 55537616, 90248626, 180497252, 360994504, 721989008]

約数ペア:

[(1, 721989008), (2, 360994504), (4, 180497252), (8, 90248626), (13, 55537616), (16, 45124313), (26, 27768808), (31, 23289968), (41, 17609488), (52, 13884404), (62, 11644984), (82, 8804744), (104, 6942202), (124, 5822492), (164, 4402372), (208, 3471101), (248, 2911246), (328, 2201186), (403, 1791536), (496, 1455623), (533, 1354576), (656, 1100593), (806, 895768), (1066, 677288), (1271, 568048), (1612, 447884), (2132, 338644), (2542, 284024), (2731, 264368), (3224, 223942), (4264, 169322), (5084, 142012), (5462, 132184), (6448, 111971), (8528, 84661), (10168, 71006), (10924, 66092), (16523, 43696), (20336, 35503), (21848, 33046)]