21163680

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:121

約数の個数: 240

約数和(自身を含む): 79035264

約数和(自身を除く): 57871584

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 69, 71, 72, 80, 81, 90, 92, 96, 108, 115, 120, 135, 138, 142, 144, 160, 162, 180, 184, 207, 213, 216, 230, 240, 270, 276, 284, 288, 324, 345, 355, 360, 368, 405, 414, 426, 432, 460, 480, 540, 552, 568, 621, 639, 648, 690, 710, 720, 736, 810, 828, 852, 864, 920, 1035, 1065, 1080, 1104, 1136, 1242, 1278, 1296, 1380, 1420, 1440, 1620, 1633, 1656, 1704, 1840, 1863, 1917, 2070, 2130, 2160, 2208, 2272, 2484, 2556, 2592, 2760, 2840, 3105, 3195, 3240, 3266, 3312, 3408, 3680, 3726, 3834, 4140, 4260, 4320, 4899, 4968, 5112, 5520, 5680, 5751, 6210, 6390, 6480, 6532, 6624, 6816, 7452, 7668, 8165, 8280, 8520, 9315, 9585, 9798, 9936, 10224, 11040, 11360, 11502, 12420, 12780, 12960, 13064, 14697, 14904, 15336, 16330, 16560, 17040, 18630, 19170, 19596, 19872, 20448, 23004, 24495, 24840, 25560, 26128, 28755, 29394, 29808, 30672, 32660, 33120, 34080, 37260, 38340, 39192, 44091, 46008, 48990, 49680, 51120, 52256, 57510, 58788, 59616, 61344, 65320, 73485, 74520, 76680, 78384, 88182, 92016, 97980, 99360, 102240, 115020, 117576, 130640, 132273, 146970, 149040, 153360, 156768, 176364, 184032, 195960, 220455, 230040, 235152, 261280, 264546, 293940, 298080, 306720, 352728, 391920, 440910, 460080, 470304, 529092, 587880, 661365, 705456, 783840, 881820, 920160, 1058184, 1175760, 1322730, 1410912, 1763640, 2116368, 2351520, 2645460, 3527280, 4232736, 5290920, 7054560, 10581840, 21163680]

約数ペア:

[(1, 21163680), (2, 10581840), (3, 7054560), (4, 5290920), (5, 4232736), (6, 3527280), (8, 2645460), (9, 2351520), (10, 2116368), (12, 1763640), (15, 1410912), (16, 1322730), (18, 1175760), (20, 1058184), (23, 920160), (24, 881820), (27, 783840), (30, 705456), (32, 661365), (36, 587880), (40, 529092), (45, 470304), (46, 460080), (48, 440910), (54, 391920), (60, 352728), (69, 306720), (71, 298080), (72, 293940), (80, 264546), (81, 261280), (90, 235152), (92, 230040), (96, 220455), (108, 195960), (115, 184032), (120, 176364), (135, 156768), (138, 153360), (142, 149040), (144, 146970), (160, 132273), (162, 130640), (180, 117576), (184, 115020), (207, 102240), (213, 99360), (216, 97980), (230, 92016), (240, 88182), (270, 78384), (276, 76680), (284, 74520), (288, 73485), (324, 65320), (345, 61344), (355, 59616), (360, 58788), (368, 57510), (405, 52256), (414, 51120), (426, 49680), (432, 48990), (460, 46008), (480, 44091), (540, 39192), (552, 38340), (568, 37260), (621, 34080), (639, 33120), (648, 32660), (690, 30672), (710, 29808), (720, 29394), (736, 28755), (810, 26128), (828, 25560), (852, 24840), (864, 24495), (920, 23004), (1035, 20448), (1065, 19872), (1080, 19596), (1104, 19170), (1136, 18630), (1242, 17040), (1278, 16560), (1296, 16330), (1380, 15336), (1420, 14904), (1440, 14697), (1620, 13064), (1633, 12960), (1656, 12780), (1704, 12420), (1840, 11502), (1863, 11360), (1917, 11040), (2070, 10224), (2130, 9936), (2160, 9798), (2208, 9585), (2272, 9315), (2484, 8520), (2556, 8280), (2592, 8165), (2760, 7668), (2840, 7452), (3105, 6816), (3195, 6624), (3240, 6532), (3266, 6480), (3312, 6390), (3408, 6210), (3680, 5751), (3726, 5680), (3834, 5520), (4140, 5112), (4260, 4968), (4320, 4899)]