261863680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{15737}}^1$

素因数の和:15771

約数の個数: 72

約数和(自身を含む): 675537912

約数和(自身を除く): 413674232

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, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 15737, 16640, 31474, 62948, 78685, 125896, 157370, 204581, 251792, 314740, 409162, 503584, 629480, 818324, 1007168, 1022905, 1258960, 1636648, 2014336, 2045810, 2517920, 3273296, 4028672, 4091620, 5035840, 6546592, 8183240, 10071680, 13093184, 16366480, 20143360, 26186368, 32732960, 52372736, 65465920, 130931840, 261863680]

約数ペア:

[(1, 261863680), (2, 130931840), (4, 65465920), (5, 52372736), (8, 32732960), (10, 26186368), (13, 20143360), (16, 16366480), (20, 13093184), (26, 10071680), (32, 8183240), (40, 6546592), (52, 5035840), (64, 4091620), (65, 4028672), (80, 3273296), (104, 2517920), (128, 2045810), (130, 2014336), (160, 1636648), (208, 1258960), (256, 1022905), (260, 1007168), (320, 818324), (416, 629480), (520, 503584), (640, 409162), (832, 314740), (1040, 251792), (1280, 204581), (1664, 157370), (2080, 125896), (3328, 78685), (4160, 62948), (8320, 31474), (15737, 16640)]