81858240

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:727

約数の個数: 168

約数和(自身を含む): 288541968

約数和(自身を除く): 206683728

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 43, 45, 48, 60, 64, 72, 80, 86, 90, 96, 120, 129, 144, 160, 172, 180, 192, 215, 240, 258, 288, 320, 344, 360, 387, 430, 480, 516, 576, 645, 661, 688, 720, 774, 860, 960, 1032, 1290, 1322, 1376, 1440, 1548, 1720, 1935, 1983, 2064, 2580, 2644, 2752, 2880, 3096, 3305, 3440, 3870, 3966, 4128, 5160, 5288, 5949, 6192, 6610, 6880, 7740, 7932, 8256, 9915, 10320, 10576, 11898, 12384, 13220, 13760, 15480, 15864, 19830, 20640, 21152, 23796, 24768, 26440, 28423, 29745, 30960, 31728, 39660, 41280, 42304, 47592, 52880, 56846, 59490, 61920, 63456, 79320, 85269, 95184, 105760, 113692, 118980, 123840, 126912, 142115, 158640, 170538, 190368, 211520, 227384, 237960, 255807, 284230, 317280, 341076, 380736, 426345, 454768, 475920, 511614, 568460, 634560, 682152, 852690, 909536, 951840, 1023228, 1136920, 1279035, 1364304, 1705380, 1819072, 1903680, 2046456, 2273840, 2558070, 2728608, 3410760, 4092912, 4547680, 5116140, 5457216, 6821520, 8185824, 9095360, 10232280, 13643040, 16371648, 20464560, 27286080, 40929120, 81858240]

約数ペア:

[(1, 81858240), (2, 40929120), (3, 27286080), (4, 20464560), (5, 16371648), (6, 13643040), (8, 10232280), (9, 9095360), (10, 8185824), (12, 6821520), (15, 5457216), (16, 5116140), (18, 4547680), (20, 4092912), (24, 3410760), (30, 2728608), (32, 2558070), (36, 2273840), (40, 2046456), (43, 1903680), (45, 1819072), (48, 1705380), (60, 1364304), (64, 1279035), (72, 1136920), (80, 1023228), (86, 951840), (90, 909536), (96, 852690), (120, 682152), (129, 634560), (144, 568460), (160, 511614), (172, 475920), (180, 454768), (192, 426345), (215, 380736), (240, 341076), (258, 317280), (288, 284230), (320, 255807), (344, 237960), (360, 227384), (387, 211520), (430, 190368), (480, 170538), (516, 158640), (576, 142115), (645, 126912), (661, 123840), (688, 118980), (720, 113692), (774, 105760), (860, 95184), (960, 85269), (1032, 79320), (1290, 63456), (1322, 61920), (1376, 59490), (1440, 56846), (1548, 52880), (1720, 47592), (1935, 42304), (1983, 41280), (2064, 39660), (2580, 31728), (2644, 30960), (2752, 29745), (2880, 28423), (3096, 26440), (3305, 24768), (3440, 23796), (3870, 21152), (3966, 20640), (4128, 19830), (5160, 15864), (5288, 15480), (5949, 13760), (6192, 13220), (6610, 12384), (6880, 11898), (7740, 10576), (7932, 10320), (8256, 9915)]