21000921920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{3109}}^1$

素因数の和:3257

約数の個数: 224

約数和(自身を含む): 58013193600

約数和(自身を除く): 37012271680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 64, 76, 80, 88, 95, 101, 110, 152, 160, 176, 190, 202, 209, 220, 304, 320, 352, 380, 404, 418, 440, 505, 608, 704, 760, 808, 836, 880, 1010, 1045, 1111, 1216, 1520, 1616, 1672, 1760, 1919, 2020, 2090, 2222, 3040, 3109, 3232, 3344, 3520, 3838, 4040, 4180, 4444, 5555, 6080, 6218, 6464, 6688, 7676, 8080, 8360, 8888, 9595, 11110, 12436, 13376, 15352, 15545, 16160, 16720, 17776, 19190, 21109, 22220, 24872, 30704, 31090, 32320, 33440, 34199, 35552, 38380, 42218, 44440, 49744, 59071, 61408, 62180, 66880, 68398, 71104, 76760, 84436, 88880, 99488, 105545, 118142, 122816, 124360, 136796, 153520, 168872, 170995, 177760, 198976, 211090, 236284, 248720, 273592, 295355, 307040, 314009, 337744, 341990, 355520, 422180, 472568, 497440, 547184, 590710, 614080, 628018, 649781, 675488, 683980, 844360, 945136, 994880, 1094368, 1181420, 1256036, 1299562, 1350976, 1367960, 1570045, 1688720, 1890272, 2188736, 2362840, 2512072, 2599124, 2735920, 3140090, 3248905, 3377440, 3454099, 3780544, 4725680, 5024144, 5198248, 5471840, 5966171, 6280180, 6497810, 6754880, 6908198, 9451360, 10048288, 10396496, 10943680, 11932342, 12560360, 12995620, 13816396, 17270495, 18902720, 20096576, 20792992, 23864684, 25120720, 25991240, 27632792, 29830855, 34540990, 41585984, 47729368, 50241440, 51982480, 55265584, 59661710, 65627881, 69081980, 95458736, 100482880, 103964960, 110531168, 119323420, 131255762, 138163960, 190917472, 207929920, 221062336, 238646840, 262511524, 276327920, 328139405, 381834944, 477293680, 525023048, 552655840, 656278810, 954587360, 1050046096, 1105311680, 1312557620, 1909174720, 2100092192, 2625115240, 4200184384, 5250230480, 10500460960, 21000921920]

約数ペア:

[(1, 21000921920), (2, 10500460960), (4, 5250230480), (5, 4200184384), (8, 2625115240), (10, 2100092192), (11, 1909174720), (16, 1312557620), (19, 1105311680), (20, 1050046096), (22, 954587360), (32, 656278810), (38, 552655840), (40, 525023048), (44, 477293680), (55, 381834944), (64, 328139405), (76, 276327920), (80, 262511524), (88, 238646840), (95, 221062336), (101, 207929920), (110, 190917472), (152, 138163960), (160, 131255762), (176, 119323420), (190, 110531168), (202, 103964960), (209, 100482880), (220, 95458736), (304, 69081980), (320, 65627881), (352, 59661710), (380, 55265584), (404, 51982480), (418, 50241440), (440, 47729368), (505, 41585984), (608, 34540990), (704, 29830855), (760, 27632792), (808, 25991240), (836, 25120720), (880, 23864684), (1010, 20792992), (1045, 20096576), (1111, 18902720), (1216, 17270495), (1520, 13816396), (1616, 12995620), (1672, 12560360), (1760, 11932342), (1919, 10943680), (2020, 10396496), (2090, 10048288), (2222, 9451360), (3040, 6908198), (3109, 6754880), (3232, 6497810), (3344, 6280180), (3520, 5966171), (3838, 5471840), (4040, 5198248), (4180, 5024144), (4444, 4725680), (5555, 3780544), (6080, 3454099), (6218, 3377440), (6464, 3248905), (6688, 3140090), (7676, 2735920), (8080, 2599124), (8360, 2512072), (8888, 2362840), (9595, 2188736), (11110, 1890272), (12436, 1688720), (13376, 1570045), (15352, 1367960), (15545, 1350976), (16160, 1299562), (16720, 1256036), (17776, 1181420), (19190, 1094368), (21109, 994880), (22220, 945136), (24872, 844360), (30704, 683980), (31090, 675488), (32320, 649781), (33440, 628018), (34199, 614080), (35552, 590710), (38380, 547184), (42218, 497440), (44440, 472568), (49744, 422180), (59071, 355520), (61408, 341990), (62180, 337744), (66880, 314009), (68398, 307040), (71104, 295355), (76760, 273592), (84436, 248720), (88880, 236284), (99488, 211090), (105545, 198976), (118142, 177760), (122816, 170995), (124360, 168872), (136796, 153520)]