21072163280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{101}}^1\times {\mathrm{443}}^1$

素因数の和:622

約数の個数: 240

約数和(自身を含む): 58695421824

約数和(自身を除く): 37623258544

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 101, 112, 116, 140, 145, 202, 203, 232, 280, 290, 404, 406, 443, 464, 505, 560, 580, 707, 808, 812, 841, 886, 1010, 1015, 1160, 1414, 1616, 1624, 1682, 1772, 2020, 2030, 2215, 2320, 2828, 2929, 3101, 3248, 3364, 3535, 3544, 4040, 4060, 4205, 4430, 5656, 5858, 5887, 6202, 6728, 7070, 7088, 8080, 8120, 8410, 8860, 11312, 11716, 11774, 12404, 12847, 13456, 14140, 14645, 15505, 16240, 16820, 17720, 20503, 23432, 23548, 24808, 25694, 28280, 29290, 29435, 31010, 33640, 35440, 41006, 44743, 46864, 47096, 49616, 51388, 56560, 58580, 58870, 62020, 64235, 67280, 82012, 84941, 89486, 89929, 94192, 102515, 102776, 117160, 117740, 124040, 128470, 164024, 169882, 178972, 179858, 205030, 205552, 223715, 234320, 235480, 248080, 256940, 313201, 328048, 339764, 357944, 359716, 372563, 410060, 424705, 447430, 449645, 470960, 513880, 594587, 626402, 679528, 715888, 719432, 745126, 820120, 849410, 894860, 899290, 1027760, 1189174, 1252804, 1297547, 1359056, 1438864, 1490252, 1566005, 1640240, 1698820, 1789720, 1798580, 1862815, 2378348, 2505608, 2595094, 2607941, 2972935, 2980504, 3132010, 3397640, 3579440, 3597160, 3725630, 4756696, 5011216, 5190188, 5215882, 5945870, 5961008, 6264020, 6487735, 6795280, 7194320, 7451260, 9082829, 9513392, 10380376, 10431764, 11891740, 12528040, 12975470, 13039705, 14902520, 18165658, 20760752, 20863528, 23783480, 25056080, 25950940, 26079410, 29805040, 36331316, 37628863, 41727056, 45414145, 47566960, 51901880, 52158820, 72662632, 75257726, 90828290, 103803760, 104317640, 145325264, 150515452, 181656580, 188144315, 208635280, 263402041, 301030904, 363313160, 376288630, 526804082, 602061808, 726626320, 752577260, 1053608164, 1317010205, 1505154520, 2107216328, 2634020410, 3010309040, 4214432656, 5268040820, 10536081640, 21072163280]

約数ペア:

[(1, 21072163280), (2, 10536081640), (4, 5268040820), (5, 4214432656), (7, 3010309040), (8, 2634020410), (10, 2107216328), (14, 1505154520), (16, 1317010205), (20, 1053608164), (28, 752577260), (29, 726626320), (35, 602061808), (40, 526804082), (56, 376288630), (58, 363313160), (70, 301030904), (80, 263402041), (101, 208635280), (112, 188144315), (116, 181656580), (140, 150515452), (145, 145325264), (202, 104317640), (203, 103803760), (232, 90828290), (280, 75257726), (290, 72662632), (404, 52158820), (406, 51901880), (443, 47566960), (464, 45414145), (505, 41727056), (560, 37628863), (580, 36331316), (707, 29805040), (808, 26079410), (812, 25950940), (841, 25056080), (886, 23783480), (1010, 20863528), (1015, 20760752), (1160, 18165658), (1414, 14902520), (1616, 13039705), (1624, 12975470), (1682, 12528040), (1772, 11891740), (2020, 10431764), (2030, 10380376), (2215, 9513392), (2320, 9082829), (2828, 7451260), (2929, 7194320), (3101, 6795280), (3248, 6487735), (3364, 6264020), (3535, 5961008), (3544, 5945870), (4040, 5215882), (4060, 5190188), (4205, 5011216), (4430, 4756696), (5656, 3725630), (5858, 3597160), (5887, 3579440), (6202, 3397640), (6728, 3132010), (7070, 2980504), (7088, 2972935), (8080, 2607941), (8120, 2595094), (8410, 2505608), (8860, 2378348), (11312, 1862815), (11716, 1798580), (11774, 1789720), (12404, 1698820), (12847, 1640240), (13456, 1566005), (14140, 1490252), (14645, 1438864), (15505, 1359056), (16240, 1297547), (16820, 1252804), (17720, 1189174), (20503, 1027760), (23432, 899290), (23548, 894860), (24808, 849410), (25694, 820120), (28280, 745126), (29290, 719432), (29435, 715888), (31010, 679528), (33640, 626402), (35440, 594587), (41006, 513880), (44743, 470960), (46864, 449645), (47096, 447430), (49616, 424705), (51388, 410060), (56560, 372563), (58580, 359716), (58870, 357944), (62020, 339764), (64235, 328048), (67280, 313201), (82012, 256940), (84941, 248080), (89486, 235480), (89929, 234320), (94192, 223715), (102515, 205552), (102776, 205030), (117160, 179858), (117740, 178972), (124040, 169882), (128470, 164024)]