81564160

素因数分解:

$2^9\times 5^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:385

約数の個数: 80

約数和(自身を含む): 197790912

約数和(自身を除く): 116226752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 151, 160, 211, 256, 302, 320, 422, 512, 604, 640, 755, 844, 1055, 1208, 1280, 1510, 1688, 2110, 2416, 2560, 3020, 3376, 4220, 4832, 6040, 6752, 8440, 9664, 12080, 13504, 16880, 19328, 24160, 27008, 31861, 33760, 38656, 48320, 54016, 63722, 67520, 77312, 96640, 108032, 127444, 135040, 159305, 193280, 254888, 270080, 318610, 386560, 509776, 540160, 637220, 1019552, 1274440, 2039104, 2548880, 4078208, 5097760, 8156416, 10195520, 16312832, 20391040, 40782080, 81564160]

約数ペア:

[(1, 81564160), (2, 40782080), (4, 20391040), (5, 16312832), (8, 10195520), (10, 8156416), (16, 5097760), (20, 4078208), (32, 2548880), (40, 2039104), (64, 1274440), (80, 1019552), (128, 637220), (151, 540160), (160, 509776), (211, 386560), (256, 318610), (302, 270080), (320, 254888), (422, 193280), (512, 159305), (604, 135040), (640, 127444), (755, 108032), (844, 96640), (1055, 77312), (1208, 67520), (1280, 63722), (1510, 54016), (1688, 48320), (2110, 38656), (2416, 33760), (2560, 31861), (3020, 27008), (3376, 24160), (4220, 19328), (4832, 16880), (6040, 13504), (6752, 12080), (8440, 9664)]