81971280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:254

約数の個数: 240

約数和(自身を含む): 301011984

約数和(自身を除く): 219040704

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 37, 40, 45, 48, 51, 60, 68, 72, 74, 80, 85, 90, 102, 111, 120, 136, 144, 148, 153, 170, 180, 181, 185, 204, 222, 240, 255, 272, 296, 306, 333, 340, 360, 362, 370, 408, 444, 510, 543, 555, 592, 612, 629, 666, 680, 720, 724, 740, 765, 816, 888, 905, 1020, 1086, 1110, 1224, 1258, 1332, 1360, 1448, 1480, 1530, 1629, 1665, 1776, 1810, 1887, 2040, 2172, 2220, 2448, 2516, 2664, 2715, 2896, 2960, 3060, 3077, 3145, 3258, 3330, 3620, 3774, 4080, 4344, 4440, 5032, 5328, 5430, 5661, 6120, 6154, 6290, 6516, 6660, 6697, 7240, 7548, 8145, 8688, 8880, 9231, 9435, 10064, 10860, 11322, 12240, 12308, 12580, 13032, 13320, 13394, 14480, 15096, 15385, 16290, 18462, 18870, 20091, 21720, 22644, 24616, 25160, 26064, 26640, 26788, 27693, 28305, 30192, 30770, 32580, 33485, 36924, 37740, 40182, 43440, 45288, 46155, 49232, 50320, 53576, 55386, 56610, 60273, 61540, 65160, 66970, 73848, 75480, 80364, 90576, 92310, 100455, 107152, 110772, 113220, 113849, 120546, 123080, 130320, 133940, 138465, 147696, 150960, 160728, 184620, 200910, 221544, 226440, 227698, 241092, 246160, 267880, 276930, 301365, 321456, 341547, 369240, 401820, 443088, 452880, 455396, 482184, 535760, 553860, 569245, 602730, 683094, 738480, 803640, 910792, 964368, 1024641, 1107720, 1138490, 1205460, 1366188, 1607280, 1707735, 1821584, 2049282, 2215440, 2276980, 2410920, 2732376, 3415470, 4098564, 4553960, 4821840, 5123205, 5464752, 6830940, 8197128, 9107920, 10246410, 13661880, 16394256, 20492820, 27323760, 40985640, 81971280]

約数ペア:

[(1, 81971280), (2, 40985640), (3, 27323760), (4, 20492820), (5, 16394256), (6, 13661880), (8, 10246410), (9, 9107920), (10, 8197128), (12, 6830940), (15, 5464752), (16, 5123205), (17, 4821840), (18, 4553960), (20, 4098564), (24, 3415470), (30, 2732376), (34, 2410920), (36, 2276980), (37, 2215440), (40, 2049282), (45, 1821584), (48, 1707735), (51, 1607280), (60, 1366188), (68, 1205460), (72, 1138490), (74, 1107720), (80, 1024641), (85, 964368), (90, 910792), (102, 803640), (111, 738480), (120, 683094), (136, 602730), (144, 569245), (148, 553860), (153, 535760), (170, 482184), (180, 455396), (181, 452880), (185, 443088), (204, 401820), (222, 369240), (240, 341547), (255, 321456), (272, 301365), (296, 276930), (306, 267880), (333, 246160), (340, 241092), (360, 227698), (362, 226440), (370, 221544), (408, 200910), (444, 184620), (510, 160728), (543, 150960), (555, 147696), (592, 138465), (612, 133940), (629, 130320), (666, 123080), (680, 120546), (720, 113849), (724, 113220), (740, 110772), (765, 107152), (816, 100455), (888, 92310), (905, 90576), (1020, 80364), (1086, 75480), (1110, 73848), (1224, 66970), (1258, 65160), (1332, 61540), (1360, 60273), (1448, 56610), (1480, 55386), (1530, 53576), (1629, 50320), (1665, 49232), (1776, 46155), (1810, 45288), (1887, 43440), (2040, 40182), (2172, 37740), (2220, 36924), (2448, 33485), (2516, 32580), (2664, 30770), (2715, 30192), (2896, 28305), (2960, 27693), (3060, 26788), (3077, 26640), (3145, 26064), (3258, 25160), (3330, 24616), (3620, 22644), (3774, 21720), (4080, 20091), (4344, 18870), (4440, 18462), (5032, 16290), (5328, 15385), (5430, 15096), (5661, 14480), (6120, 13394), (6154, 13320), (6290, 13032), (6516, 12580), (6660, 12308), (6697, 12240), (7240, 11322), (7548, 10860), (8145, 10064), (8688, 9435), (8880, 9231)]