281028720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1039}}^1$

素因数の和:1092

約数の個数: 240

約数和(自身を含む): 1058503680

約数和(自身を除く): 777474960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 48, 49, 56, 60, 69, 70, 80, 84, 92, 98, 105, 112, 115, 120, 138, 140, 147, 161, 168, 184, 196, 210, 230, 240, 245, 276, 280, 294, 322, 336, 345, 368, 392, 420, 460, 483, 490, 552, 560, 588, 644, 690, 735, 784, 805, 840, 920, 966, 980, 1039, 1104, 1127, 1176, 1288, 1380, 1470, 1610, 1680, 1840, 1932, 1960, 2078, 2254, 2352, 2415, 2576, 2760, 2940, 3117, 3220, 3381, 3864, 3920, 4156, 4508, 4830, 5195, 5520, 5635, 5880, 6234, 6440, 6762, 7273, 7728, 8312, 9016, 9660, 10390, 11270, 11760, 12468, 12880, 13524, 14546, 15585, 16624, 16905, 18032, 19320, 20780, 21819, 22540, 23897, 24936, 27048, 29092, 31170, 33810, 36365, 38640, 41560, 43638, 45080, 47794, 49872, 50911, 54096, 58184, 62340, 67620, 71691, 72730, 83120, 87276, 90160, 95588, 101822, 109095, 116368, 119485, 124680, 135240, 143382, 145460, 152733, 167279, 174552, 191176, 203644, 218190, 238970, 249360, 254555, 270480, 286764, 290920, 305466, 334558, 349104, 358455, 382352, 407288, 436380, 477940, 501837, 509110, 573528, 581840, 610932, 669116, 716910, 763665, 814576, 836395, 872760, 955880, 1003674, 1018220, 1147056, 1170953, 1221864, 1338232, 1433820, 1527330, 1672790, 1745520, 1911760, 2007348, 2036440, 2341906, 2443728, 2509185, 2676464, 2867640, 3054660, 3345580, 3512859, 4014696, 4072880, 4683812, 5018370, 5735280, 5854765, 6109320, 6691160, 7025718, 8029392, 9367624, 10036740, 11709530, 12218640, 13382320, 14051436, 17564295, 18735248, 20073480, 23419060, 28102872, 35128590, 40146960, 46838120, 56205744, 70257180, 93676240, 140514360, 281028720]

約数ペア:

[(1, 281028720), (2, 140514360), (3, 93676240), (4, 70257180), (5, 56205744), (6, 46838120), (7, 40146960), (8, 35128590), (10, 28102872), (12, 23419060), (14, 20073480), (15, 18735248), (16, 17564295), (20, 14051436), (21, 13382320), (23, 12218640), (24, 11709530), (28, 10036740), (30, 9367624), (35, 8029392), (40, 7025718), (42, 6691160), (46, 6109320), (48, 5854765), (49, 5735280), (56, 5018370), (60, 4683812), (69, 4072880), (70, 4014696), (80, 3512859), (84, 3345580), (92, 3054660), (98, 2867640), (105, 2676464), (112, 2509185), (115, 2443728), (120, 2341906), (138, 2036440), (140, 2007348), (147, 1911760), (161, 1745520), (168, 1672790), (184, 1527330), (196, 1433820), (210, 1338232), (230, 1221864), (240, 1170953), (245, 1147056), (276, 1018220), (280, 1003674), (294, 955880), (322, 872760), (336, 836395), (345, 814576), (368, 763665), (392, 716910), (420, 669116), (460, 610932), (483, 581840), (490, 573528), (552, 509110), (560, 501837), (588, 477940), (644, 436380), (690, 407288), (735, 382352), (784, 358455), (805, 349104), (840, 334558), (920, 305466), (966, 290920), (980, 286764), (1039, 270480), (1104, 254555), (1127, 249360), (1176, 238970), (1288, 218190), (1380, 203644), (1470, 191176), (1610, 174552), (1680, 167279), (1840, 152733), (1932, 145460), (1960, 143382), (2078, 135240), (2254, 124680), (2352, 119485), (2415, 116368), (2576, 109095), (2760, 101822), (2940, 95588), (3117, 90160), (3220, 87276), (3381, 83120), (3864, 72730), (3920, 71691), (4156, 67620), (4508, 62340), (4830, 58184), (5195, 54096), (5520, 50911), (5635, 49872), (5880, 47794), (6234, 45080), (6440, 43638), (6762, 41560), (7273, 38640), (7728, 36365), (8312, 33810), (9016, 31170), (9660, 29092), (10390, 27048), (11270, 24936), (11760, 23897), (12468, 22540), (12880, 21819), (13524, 20780), (14546, 19320), (15585, 18032), (16624, 16905)]