21037570920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{65003}}^1$

素因数の和:65080

約数の個数: 192

約数和(自身を含む): 73012492800

約数和(自身を除く): 51974921880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 31, 36, 40, 45, 58, 60, 62, 72, 87, 90, 93, 116, 120, 124, 145, 155, 174, 180, 186, 232, 248, 261, 279, 290, 310, 348, 360, 372, 435, 465, 522, 558, 580, 620, 696, 744, 870, 899, 930, 1044, 1116, 1160, 1240, 1305, 1395, 1740, 1798, 1860, 2088, 2232, 2610, 2697, 2790, 3480, 3596, 3720, 4495, 5220, 5394, 5580, 7192, 8091, 8990, 10440, 10788, 11160, 13485, 16182, 17980, 21576, 26970, 32364, 35960, 40455, 53940, 64728, 65003, 80910, 107880, 130006, 161820, 195009, 260012, 323640, 325015, 390018, 520024, 585027, 650030, 780036, 975045, 1170054, 1300060, 1560072, 1885087, 1950090, 2015093, 2340108, 2600120, 2925135, 3770174, 3900180, 4030186, 4680216, 5655261, 5850270, 6045279, 7540348, 7800360, 8060372, 9425435, 10075465, 11310522, 11700540, 12090558, 15080696, 16120744, 16965783, 18135837, 18850870, 20150930, 22621044, 23401080, 24181116, 28276305, 30226395, 33931566, 36271674, 37701740, 40301860, 45242088, 48362232, 56552610, 58437697, 60452790, 67863132, 72543348, 75403480, 80603720, 84828915, 90679185, 113105220, 116875394, 120905580, 135726264, 145086696, 169657830, 175313091, 181358370, 226210440, 233750788, 241811160, 292188485, 339315660, 350626182, 362716740, 467501576, 525939273, 584376970, 678631320, 701252364, 725433480, 876565455, 1051878546, 1168753940, 1402504728, 1753130910, 2103757092, 2337507880, 2629696365, 3506261820, 4207514184, 5259392730, 7012523640, 10518785460, 21037570920]

約数ペア:

[(1, 21037570920), (2, 10518785460), (3, 7012523640), (4, 5259392730), (5, 4207514184), (6, 3506261820), (8, 2629696365), (9, 2337507880), (10, 2103757092), (12, 1753130910), (15, 1402504728), (18, 1168753940), (20, 1051878546), (24, 876565455), (29, 725433480), (30, 701252364), (31, 678631320), (36, 584376970), (40, 525939273), (45, 467501576), (58, 362716740), (60, 350626182), (62, 339315660), (72, 292188485), (87, 241811160), (90, 233750788), (93, 226210440), (116, 181358370), (120, 175313091), (124, 169657830), (145, 145086696), (155, 135726264), (174, 120905580), (180, 116875394), (186, 113105220), (232, 90679185), (248, 84828915), (261, 80603720), (279, 75403480), (290, 72543348), (310, 67863132), (348, 60452790), (360, 58437697), (372, 56552610), (435, 48362232), (465, 45242088), (522, 40301860), (558, 37701740), (580, 36271674), (620, 33931566), (696, 30226395), (744, 28276305), (870, 24181116), (899, 23401080), (930, 22621044), (1044, 20150930), (1116, 18850870), (1160, 18135837), (1240, 16965783), (1305, 16120744), (1395, 15080696), (1740, 12090558), (1798, 11700540), (1860, 11310522), (2088, 10075465), (2232, 9425435), (2610, 8060372), (2697, 7800360), (2790, 7540348), (3480, 6045279), (3596, 5850270), (3720, 5655261), (4495, 4680216), (5220, 4030186), (5394, 3900180), (5580, 3770174), (7192, 2925135), (8091, 2600120), (8990, 2340108), (10440, 2015093), (10788, 1950090), (11160, 1885087), (13485, 1560072), (16182, 1300060), (17980, 1170054), (21576, 975045), (26970, 780036), (32364, 650030), (35960, 585027), (40455, 520024), (53940, 390018), (64728, 325015), (65003, 323640), (80910, 260012), (107880, 195009), (130006, 161820)]