71531080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 165628800

約数和(自身を除く): 94097720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 89, 142, 178, 283, 284, 355, 356, 445, 566, 568, 710, 712, 890, 1132, 1415, 1420, 1780, 2264, 2830, 2840, 3560, 5660, 6319, 11320, 12638, 20093, 25187, 25276, 31595, 40186, 50374, 50552, 63190, 80372, 100465, 100748, 125935, 126380, 160744, 200930, 201496, 251870, 252760, 401860, 503740, 803720, 1007480, 1788277, 3576554, 7153108, 8941385, 14306216, 17882770, 35765540, 71531080]

約数ペア:

[(1, 71531080), (2, 35765540), (4, 17882770), (5, 14306216), (8, 8941385), (10, 7153108), (20, 3576554), (40, 1788277), (71, 1007480), (89, 803720), (142, 503740), (178, 401860), (283, 252760), (284, 251870), (355, 201496), (356, 200930), (445, 160744), (566, 126380), (568, 125935), (710, 100748), (712, 100465), (890, 80372), (1132, 63190), (1415, 50552), (1420, 50374), (1780, 40186), (2264, 31595), (2830, 25276), (2840, 25187), (3560, 20093), (5660, 12638), (6319, 11320)]