81534240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1381}}^1$

素因数の和:1443

約数の個数: 144

約数和(自身を含む): 285228216

約数和(自身を除く): 203693976

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 96, 120, 123, 144, 160, 164, 180, 205, 240, 246, 288, 328, 360, 369, 410, 480, 492, 615, 656, 720, 738, 820, 984, 1230, 1312, 1381, 1440, 1476, 1640, 1845, 1968, 2460, 2762, 2952, 3280, 3690, 3936, 4143, 4920, 5524, 5904, 6560, 6905, 7380, 8286, 9840, 11048, 11808, 12429, 13810, 14760, 16572, 19680, 20715, 22096, 24858, 27620, 29520, 33144, 41430, 44192, 49716, 55240, 56621, 59040, 62145, 66288, 82860, 99432, 110480, 113242, 124290, 132576, 165720, 169863, 198864, 220960, 226484, 248580, 283105, 331440, 339726, 397728, 452968, 497160, 509589, 566210, 662880, 679452, 849315, 905936, 994320, 1019178, 1132420, 1358904, 1698630, 1811872, 1988640, 2038356, 2264840, 2547945, 2717808, 3397260, 4076712, 4529680, 5095890, 5435616, 6794520, 8153424, 9059360, 10191780, 13589040, 16306848, 20383560, 27178080, 40767120, 81534240]

約数ペア:

[(1, 81534240), (2, 40767120), (3, 27178080), (4, 20383560), (5, 16306848), (6, 13589040), (8, 10191780), (9, 9059360), (10, 8153424), (12, 6794520), (15, 5435616), (16, 5095890), (18, 4529680), (20, 4076712), (24, 3397260), (30, 2717808), (32, 2547945), (36, 2264840), (40, 2038356), (41, 1988640), (45, 1811872), (48, 1698630), (60, 1358904), (72, 1132420), (80, 1019178), (82, 994320), (90, 905936), (96, 849315), (120, 679452), (123, 662880), (144, 566210), (160, 509589), (164, 497160), (180, 452968), (205, 397728), (240, 339726), (246, 331440), (288, 283105), (328, 248580), (360, 226484), (369, 220960), (410, 198864), (480, 169863), (492, 165720), (615, 132576), (656, 124290), (720, 113242), (738, 110480), (820, 99432), (984, 82860), (1230, 66288), (1312, 62145), (1381, 59040), (1440, 56621), (1476, 55240), (1640, 49716), (1845, 44192), (1968, 41430), (2460, 33144), (2762, 29520), (2952, 27620), (3280, 24858), (3690, 22096), (3936, 20715), (4143, 19680), (4920, 16572), (5524, 14760), (5904, 13810), (6560, 12429), (6905, 11808), (7380, 11048), (8286, 9840)]