81395280

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 240

約数和(自身を含む): 292481280

約数和(自身を除く): 211086000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 53, 54, 60, 72, 79, 80, 81, 90, 106, 108, 120, 135, 144, 158, 159, 162, 180, 212, 216, 237, 240, 243, 265, 270, 316, 318, 324, 360, 395, 405, 424, 432, 474, 477, 486, 530, 540, 632, 636, 648, 711, 720, 790, 795, 810, 848, 948, 954, 972, 1060, 1080, 1185, 1215, 1264, 1272, 1296, 1422, 1431, 1580, 1590, 1620, 1896, 1908, 1944, 2120, 2133, 2160, 2370, 2385, 2430, 2544, 2844, 2862, 3160, 3180, 3240, 3555, 3792, 3816, 3888, 4187, 4240, 4266, 4293, 4740, 4770, 4860, 5688, 5724, 6320, 6360, 6399, 6480, 7110, 7155, 7632, 8374, 8532, 8586, 9480, 9540, 9720, 10665, 11376, 11448, 12561, 12720, 12798, 12879, 14220, 14310, 16748, 17064, 17172, 18960, 19080, 19197, 19440, 20935, 21330, 21465, 22896, 25122, 25596, 25758, 28440, 28620, 31995, 33496, 34128, 34344, 37683, 38160, 38394, 41870, 42660, 42930, 50244, 51192, 51516, 56880, 57240, 62805, 63990, 64395, 66992, 68688, 75366, 76788, 83740, 85320, 85860, 95985, 100488, 102384, 103032, 113049, 114480, 125610, 127980, 128790, 150732, 153576, 167480, 170640, 171720, 188415, 191970, 200976, 206064, 226098, 251220, 255960, 257580, 301464, 307152, 334960, 339147, 343440, 376830, 383940, 452196, 502440, 511920, 515160, 565245, 602928, 678294, 753660, 767880, 904392, 1004880, 1017441, 1030320, 1130490, 1356588, 1507320, 1535760, 1695735, 1808784, 2034882, 2260980, 2713176, 3014640, 3391470, 4069764, 4521960, 5087205, 5426352, 6782940, 8139528, 9043920, 10174410, 13565880, 16279056, 20348820, 27131760, 40697640, 81395280]

約数ペア:

[(1, 81395280), (2, 40697640), (3, 27131760), (4, 20348820), (5, 16279056), (6, 13565880), (8, 10174410), (9, 9043920), (10, 8139528), (12, 6782940), (15, 5426352), (16, 5087205), (18, 4521960), (20, 4069764), (24, 3391470), (27, 3014640), (30, 2713176), (36, 2260980), (40, 2034882), (45, 1808784), (48, 1695735), (53, 1535760), (54, 1507320), (60, 1356588), (72, 1130490), (79, 1030320), (80, 1017441), (81, 1004880), (90, 904392), (106, 767880), (108, 753660), (120, 678294), (135, 602928), (144, 565245), (158, 515160), (159, 511920), (162, 502440), (180, 452196), (212, 383940), (216, 376830), (237, 343440), (240, 339147), (243, 334960), (265, 307152), (270, 301464), (316, 257580), (318, 255960), (324, 251220), (360, 226098), (395, 206064), (405, 200976), (424, 191970), (432, 188415), (474, 171720), (477, 170640), (486, 167480), (530, 153576), (540, 150732), (632, 128790), (636, 127980), (648, 125610), (711, 114480), (720, 113049), (790, 103032), (795, 102384), (810, 100488), (848, 95985), (948, 85860), (954, 85320), (972, 83740), (1060, 76788), (1080, 75366), (1185, 68688), (1215, 66992), (1264, 64395), (1272, 63990), (1296, 62805), (1422, 57240), (1431, 56880), (1580, 51516), (1590, 51192), (1620, 50244), (1896, 42930), (1908, 42660), (1944, 41870), (2120, 38394), (2133, 38160), (2160, 37683), (2370, 34344), (2385, 34128), (2430, 33496), (2544, 31995), (2844, 28620), (2862, 28440), (3160, 25758), (3180, 25596), (3240, 25122), (3555, 22896), (3792, 21465), (3816, 21330), (3888, 20935), (4187, 19440), (4240, 19197), (4266, 19080), (4293, 18960), (4740, 17172), (4770, 17064), (4860, 16748), (5688, 14310), (5724, 14220), (6320, 12879), (6360, 12798), (6399, 12720), (6480, 12561), (7110, 11448), (7155, 11376), (7632, 10665), (8374, 9720), (8532, 9540), (8586, 9480)]