278320640

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8363}}^1$

素因数の和:8399

約数の個数: 80

約数和(自身を含む): 718735248

約数和(自身を除く): 440414608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2560, 3328, 4160, 6656, 8320, 8363, 16640, 16726, 33280, 33452, 41815, 66904, 83630, 108719, 133808, 167260, 217438, 267616, 334520, 434876, 535232, 543595, 669040, 869752, 1070464, 1087190, 1338080, 1739504, 2140928, 2174380, 2676160, 3479008, 4281856, 4348760, 5352320, 6958016, 8697520, 10704640, 13916032, 17395040, 21409280, 27832064, 34790080, 55664128, 69580160, 139160320, 278320640]

約数ペア:

[(1, 278320640), (2, 139160320), (4, 69580160), (5, 55664128), (8, 34790080), (10, 27832064), (13, 21409280), (16, 17395040), (20, 13916032), (26, 10704640), (32, 8697520), (40, 6958016), (52, 5352320), (64, 4348760), (65, 4281856), (80, 3479008), (104, 2676160), (128, 2174380), (130, 2140928), (160, 1739504), (208, 1338080), (256, 1087190), (260, 1070464), (320, 869752), (416, 669040), (512, 543595), (520, 535232), (640, 434876), (832, 334520), (1040, 267616), (1280, 217438), (1664, 167260), (2080, 133808), (2560, 108719), (3328, 83630), (4160, 66904), (6656, 41815), (8320, 33452), (8363, 33280), (16640, 16726)]