20921269680

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1327}}^1$

素因数の和:2166

約数の個数: 240

約数和(自身を含む): 73007660544

約数和(自身を除く): 52086390864

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 811, 972, 1080, 1215, 1296, 1327, 1620, 1622, 1944, 2160, 2430, 2433, 2654, 3240, 3244, 3888, 3981, 4055, 4860, 4866, 5308, 6480, 6488, 6635, 7299, 7962, 8110, 9720, 9732, 10616, 11943, 12165, 12976, 13270, 14598, 15924, 16220, 19440, 19464, 19905, 21232, 21897, 23886, 24330, 26540, 29196, 31848, 32440, 35829, 36495, 38928, 39810, 43794, 47772, 48660, 53080, 58392, 59715, 63696, 64880, 65691, 71658, 72990, 79620, 87588, 95544, 97320, 106160, 107487, 109485, 116784, 119430, 131382, 143316, 145980, 159240, 175176, 179145, 191088, 194640, 197073, 214974, 218970, 238860, 262764, 286632, 291960, 318480, 322461, 328455, 350352, 358290, 394146, 429948, 437940, 477720, 525528, 537435, 573264, 583920, 644922, 656910, 716580, 788292, 859896, 875880, 955440, 985365, 1051056, 1074870, 1076197, 1289844, 1313820, 1433160, 1576584, 1612305, 1719792, 1751760, 1970730, 2149740, 2152394, 2579688, 2627640, 2866320, 3153168, 3224610, 3228591, 3941460, 4299480, 4304788, 5159376, 5255280, 5380985, 6449220, 6457182, 7882920, 8598960, 8609576, 9685773, 10761970, 12898440, 12914364, 15765840, 16142955, 17219152, 19371546, 21523940, 25796880, 25828728, 29057319, 32285910, 38743092, 43047880, 48428865, 51657456, 58114638, 64571820, 77486184, 86095760, 87171957, 96857730, 116229276, 129143640, 145286595, 154972368, 174343914, 193715460, 232458552, 258287280, 261515871, 290573190, 348687828, 387430920, 435859785, 464917104, 523031742, 581146380, 697375656, 774861840, 871719570, 1046063484, 1162292760, 1307579355, 1394751312, 1743439140, 2092126968, 2324585520, 2615158710, 3486878280, 4184253936, 5230317420, 6973756560, 10460634840, 20921269680]

約数ペア:

[(1, 20921269680), (2, 10460634840), (3, 6973756560), (4, 5230317420), (5, 4184253936), (6, 3486878280), (8, 2615158710), (9, 2324585520), (10, 2092126968), (12, 1743439140), (15, 1394751312), (16, 1307579355), (18, 1162292760), (20, 1046063484), (24, 871719570), (27, 774861840), (30, 697375656), (36, 581146380), (40, 523031742), (45, 464917104), (48, 435859785), (54, 387430920), (60, 348687828), (72, 290573190), (80, 261515871), (81, 258287280), (90, 232458552), (108, 193715460), (120, 174343914), (135, 154972368), (144, 145286595), (162, 129143640), (180, 116229276), (216, 96857730), (240, 87171957), (243, 86095760), (270, 77486184), (324, 64571820), (360, 58114638), (405, 51657456), (432, 48428865), (486, 43047880), (540, 38743092), (648, 32285910), (720, 29057319), (810, 25828728), (811, 25796880), (972, 21523940), (1080, 19371546), (1215, 17219152), (1296, 16142955), (1327, 15765840), (1620, 12914364), (1622, 12898440), (1944, 10761970), (2160, 9685773), (2430, 8609576), (2433, 8598960), (2654, 7882920), (3240, 6457182), (3244, 6449220), (3888, 5380985), (3981, 5255280), (4055, 5159376), (4860, 4304788), (4866, 4299480), (5308, 3941460), (6480, 3228591), (6488, 3224610), (6635, 3153168), (7299, 2866320), (7962, 2627640), (8110, 2579688), (9720, 2152394), (9732, 2149740), (10616, 1970730), (11943, 1751760), (12165, 1719792), (12976, 1612305), (13270, 1576584), (14598, 1433160), (15924, 1313820), (16220, 1289844), (19440, 1076197), (19464, 1074870), (19905, 1051056), (21232, 985365), (21897, 955440), (23886, 875880), (24330, 859896), (26540, 788292), (29196, 716580), (31848, 656910), (32440, 644922), (35829, 583920), (36495, 573264), (38928, 537435), (39810, 525528), (43794, 477720), (47772, 437940), (48660, 429948), (53080, 394146), (58392, 358290), (59715, 350352), (63696, 328455), (64880, 322461), (65691, 318480), (71658, 291960), (72990, 286632), (79620, 262764), (87588, 238860), (95544, 218970), (97320, 214974), (106160, 197073), (107487, 194640), (109485, 191088), (116784, 179145), (119430, 175176), (131382, 159240), (143316, 145980)]