661681440

素因数分解:

$2^5\times 3^3\times 5^1\times 7^1\times {\mathrm{21881}}^1$

素因数の和:21912

約数の個数: 192

約数和(自身を含む): 2646846720

約数和(自身を除く): 1985165280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 336, 360, 378, 420, 432, 480, 504, 540, 560, 630, 672, 720, 756, 840, 864, 945, 1008, 1080, 1120, 1260, 1440, 1512, 1680, 1890, 2016, 2160, 2520, 3024, 3360, 3780, 4320, 5040, 6048, 7560, 10080, 15120, 21881, 30240, 43762, 65643, 87524, 109405, 131286, 153167, 175048, 196929, 218810, 262572, 306334, 328215, 350096, 393858, 437620, 459501, 525144, 590787, 612668, 656430, 700192, 765835, 787716, 875240, 919002, 984645, 1050288, 1181574, 1225336, 1312860, 1378503, 1531670, 1575432, 1750480, 1838004, 1969290, 2100576, 2297505, 2363148, 2450672, 2625720, 2757006, 2953935, 3063340, 3150864, 3500960, 3676008, 3938580, 4135509, 4595010, 4726296, 4901344, 5251440, 5514012, 5907870, 6126680, 6301728, 6892515, 7352016, 7877160, 8271018, 9190020, 9452592, 10502880, 11028024, 11815740, 12253360, 13785030, 14704032, 15754320, 16542036, 18380040, 18905184, 20677545, 22056048, 23631480, 24506720, 27570060, 31508640, 33084072, 36760080, 41355090, 44112096, 47262960, 55140120, 66168144, 73520160, 82710180, 94525920, 110280240, 132336288, 165420360, 220560480, 330840720, 661681440]

約数ペア:

[(1, 661681440), (2, 330840720), (3, 220560480), (4, 165420360), (5, 132336288), (6, 110280240), (7, 94525920), (8, 82710180), (9, 73520160), (10, 66168144), (12, 55140120), (14, 47262960), (15, 44112096), (16, 41355090), (18, 36760080), (20, 33084072), (21, 31508640), (24, 27570060), (27, 24506720), (28, 23631480), (30, 22056048), (32, 20677545), (35, 18905184), (36, 18380040), (40, 16542036), (42, 15754320), (45, 14704032), (48, 13785030), (54, 12253360), (56, 11815740), (60, 11028024), (63, 10502880), (70, 9452592), (72, 9190020), (80, 8271018), (84, 7877160), (90, 7352016), (96, 6892515), (105, 6301728), (108, 6126680), (112, 5907870), (120, 5514012), (126, 5251440), (135, 4901344), (140, 4726296), (144, 4595010), (160, 4135509), (168, 3938580), (180, 3676008), (189, 3500960), (210, 3150864), (216, 3063340), (224, 2953935), (240, 2757006), (252, 2625720), (270, 2450672), (280, 2363148), (288, 2297505), (315, 2100576), (336, 1969290), (360, 1838004), (378, 1750480), (420, 1575432), (432, 1531670), (480, 1378503), (504, 1312860), (540, 1225336), (560, 1181574), (630, 1050288), (672, 984645), (720, 919002), (756, 875240), (840, 787716), (864, 765835), (945, 700192), (1008, 656430), (1080, 612668), (1120, 590787), (1260, 525144), (1440, 459501), (1512, 437620), (1680, 393858), (1890, 350096), (2016, 328215), (2160, 306334), (2520, 262572), (3024, 218810), (3360, 196929), (3780, 175048), (4320, 153167), (5040, 131286), (6048, 109405), (7560, 87524), (10080, 65643), (15120, 43762), (21881, 30240)]