81292120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{971}}^1$

素因数の和:1025

約数の個数: 128

約数和(自身を含む): 235146240

約数和(自身を除く): 153854120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 91, 92, 104, 115, 130, 140, 161, 182, 184, 230, 260, 280, 299, 322, 364, 455, 460, 520, 598, 644, 728, 805, 910, 920, 971, 1196, 1288, 1495, 1610, 1820, 1942, 2093, 2392, 2990, 3220, 3640, 3884, 4186, 4855, 5980, 6440, 6797, 7768, 8372, 9710, 10465, 11960, 12623, 13594, 16744, 19420, 20930, 22333, 25246, 27188, 33985, 38840, 41860, 44666, 50492, 54376, 63115, 67970, 83720, 88361, 89332, 100984, 111665, 126230, 135940, 156331, 176722, 178664, 223330, 252460, 271880, 290329, 312662, 353444, 441805, 446660, 504920, 580658, 625324, 706888, 781655, 883610, 893320, 1161316, 1250648, 1451645, 1563310, 1767220, 2032303, 2322632, 2903290, 3126620, 3534440, 4064606, 5806580, 6253240, 8129212, 10161515, 11613160, 16258424, 20323030, 40646060, 81292120]

約数ペア:

[(1, 81292120), (2, 40646060), (4, 20323030), (5, 16258424), (7, 11613160), (8, 10161515), (10, 8129212), (13, 6253240), (14, 5806580), (20, 4064606), (23, 3534440), (26, 3126620), (28, 2903290), (35, 2322632), (40, 2032303), (46, 1767220), (52, 1563310), (56, 1451645), (65, 1250648), (70, 1161316), (91, 893320), (92, 883610), (104, 781655), (115, 706888), (130, 625324), (140, 580658), (161, 504920), (182, 446660), (184, 441805), (230, 353444), (260, 312662), (280, 290329), (299, 271880), (322, 252460), (364, 223330), (455, 178664), (460, 176722), (520, 156331), (598, 135940), (644, 126230), (728, 111665), (805, 100984), (910, 89332), (920, 88361), (971, 83720), (1196, 67970), (1288, 63115), (1495, 54376), (1610, 50492), (1820, 44666), (1942, 41860), (2093, 38840), (2392, 33985), (2990, 27188), (3220, 25246), (3640, 22333), (3884, 20930), (4186, 19420), (4855, 16744), (5980, 13594), (6440, 12623), (6797, 11960), (7768, 10465), (8372, 9710)]