1991916160

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7723}}^1$

素因数の和:7786

約数の個数: 128

約数和(自身を含む): 5294338560

約数和(自身を除く): 3302422400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1240, 1612, 1664, 1984, 2015, 2080, 2480, 3224, 3968, 4030, 4160, 4960, 6448, 7723, 8060, 8320, 9920, 12896, 15446, 16120, 19840, 25792, 30892, 32240, 38615, 51584, 61784, 64480, 77230, 100399, 123568, 128960, 154460, 200798, 239413, 247136, 257920, 308920, 401596, 478826, 494272, 501995, 617840, 803192, 957652, 988544, 1003990, 1197065, 1235680, 1606384, 1915304, 2007980, 2394130, 2471360, 3112369, 3212768, 3830608, 4015960, 4788260, 4942720, 6224738, 6425536, 7661216, 8031920, 9576520, 12449476, 12851072, 15322432, 15561845, 16063840, 19153040, 24898952, 30644864, 31123690, 32127680, 38306080, 49797904, 62247380, 64255360, 76612160, 99595808, 124494760, 153224320, 199191616, 248989520, 398383232, 497979040, 995958080, 1991916160]

約数ペア:

[(1, 1991916160), (2, 995958080), (4, 497979040), (5, 398383232), (8, 248989520), (10, 199191616), (13, 153224320), (16, 124494760), (20, 99595808), (26, 76612160), (31, 64255360), (32, 62247380), (40, 49797904), (52, 38306080), (62, 32127680), (64, 31123690), (65, 30644864), (80, 24898952), (104, 19153040), (124, 16063840), (128, 15561845), (130, 15322432), (155, 12851072), (160, 12449476), (208, 9576520), (248, 8031920), (260, 7661216), (310, 6425536), (320, 6224738), (403, 4942720), (416, 4788260), (496, 4015960), (520, 3830608), (620, 3212768), (640, 3112369), (806, 2471360), (832, 2394130), (992, 2007980), (1040, 1915304), (1240, 1606384), (1612, 1235680), (1664, 1197065), (1984, 1003990), (2015, 988544), (2080, 957652), (2480, 803192), (3224, 617840), (3968, 501995), (4030, 494272), (4160, 478826), (4960, 401596), (6448, 308920), (7723, 257920), (8060, 247136), (8320, 239413), (9920, 200798), (12896, 154460), (15446, 128960), (16120, 123568), (19840, 100399), (25792, 77230), (30892, 64480), (32240, 61784), (38615, 51584)]