81610880

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{577}}^1$

素因数の和:626

約数の個数: 128

約数和(自身を含む): 222853680

約数和(自身を除く): 141242800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 170, 208, 221, 260, 272, 320, 340, 416, 442, 520, 544, 577, 640, 680, 832, 884, 1040, 1088, 1105, 1154, 1360, 1664, 1768, 2080, 2176, 2210, 2308, 2720, 2885, 3536, 4160, 4420, 4616, 5440, 5770, 7072, 7501, 8320, 8840, 9232, 9809, 10880, 11540, 14144, 15002, 17680, 18464, 19618, 23080, 28288, 30004, 35360, 36928, 37505, 39236, 46160, 49045, 60008, 70720, 73856, 75010, 78472, 92320, 98090, 120016, 127517, 141440, 150020, 156944, 184640, 196180, 240032, 255034, 300040, 313888, 369280, 392360, 480064, 510068, 600080, 627776, 637585, 784720, 960128, 1020136, 1200160, 1255552, 1275170, 1569440, 2040272, 2400320, 2550340, 3138880, 4080544, 4800640, 5100680, 6277760, 8161088, 10201360, 16322176, 20402720, 40805440, 81610880]

約数ペア:

[(1, 81610880), (2, 40805440), (4, 20402720), (5, 16322176), (8, 10201360), (10, 8161088), (13, 6277760), (16, 5100680), (17, 4800640), (20, 4080544), (26, 3138880), (32, 2550340), (34, 2400320), (40, 2040272), (52, 1569440), (64, 1275170), (65, 1255552), (68, 1200160), (80, 1020136), (85, 960128), (104, 784720), (128, 637585), (130, 627776), (136, 600080), (160, 510068), (170, 480064), (208, 392360), (221, 369280), (260, 313888), (272, 300040), (320, 255034), (340, 240032), (416, 196180), (442, 184640), (520, 156944), (544, 150020), (577, 141440), (640, 127517), (680, 120016), (832, 98090), (884, 92320), (1040, 78472), (1088, 75010), (1105, 73856), (1154, 70720), (1360, 60008), (1664, 49045), (1768, 46160), (2080, 39236), (2176, 37505), (2210, 36928), (2308, 35360), (2720, 30004), (2885, 28288), (3536, 23080), (4160, 19618), (4420, 18464), (4616, 17680), (5440, 15002), (5770, 14144), (7072, 11540), (7501, 10880), (8320, 9809), (8840, 9232)]