21953360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:157

約数の個数: 160

約数和(自身を含む): 63745920

約数和(自身を除く): 41792560

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 19, 20, 22, 26, 38, 40, 44, 52, 55, 65, 76, 80, 88, 95, 101, 104, 110, 130, 143, 152, 176, 190, 202, 208, 209, 220, 247, 260, 286, 304, 380, 404, 418, 440, 494, 505, 520, 572, 715, 760, 808, 836, 880, 988, 1010, 1040, 1045, 1111, 1144, 1235, 1313, 1430, 1520, 1616, 1672, 1919, 1976, 2020, 2090, 2222, 2288, 2470, 2626, 2717, 2860, 3344, 3838, 3952, 4040, 4180, 4444, 4940, 5252, 5434, 5555, 5720, 6565, 7676, 8080, 8360, 8888, 9595, 9880, 10504, 10868, 11110, 11440, 13130, 13585, 14443, 15352, 16720, 17776, 19190, 19760, 21008, 21109, 21736, 22220, 24947, 26260, 27170, 28886, 30704, 38380, 42218, 43472, 44440, 49894, 52520, 54340, 57772, 72215, 76760, 84436, 88880, 99788, 105040, 105545, 108680, 115544, 124735, 144430, 153520, 168872, 199576, 211090, 217360, 231088, 249470, 274417, 288860, 337744, 399152, 422180, 498940, 548834, 577720, 844360, 997880, 1097668, 1155440, 1372085, 1688720, 1995760, 2195336, 2744170, 4390672, 5488340, 10976680, 21953360]

約数ペア:

[(1, 21953360), (2, 10976680), (4, 5488340), (5, 4390672), (8, 2744170), (10, 2195336), (11, 1995760), (13, 1688720), (16, 1372085), (19, 1155440), (20, 1097668), (22, 997880), (26, 844360), (38, 577720), (40, 548834), (44, 498940), (52, 422180), (55, 399152), (65, 337744), (76, 288860), (80, 274417), (88, 249470), (95, 231088), (101, 217360), (104, 211090), (110, 199576), (130, 168872), (143, 153520), (152, 144430), (176, 124735), (190, 115544), (202, 108680), (208, 105545), (209, 105040), (220, 99788), (247, 88880), (260, 84436), (286, 76760), (304, 72215), (380, 57772), (404, 54340), (418, 52520), (440, 49894), (494, 44440), (505, 43472), (520, 42218), (572, 38380), (715, 30704), (760, 28886), (808, 27170), (836, 26260), (880, 24947), (988, 22220), (1010, 21736), (1040, 21109), (1045, 21008), (1111, 19760), (1144, 19190), (1235, 17776), (1313, 16720), (1430, 15352), (1520, 14443), (1616, 13585), (1672, 13130), (1919, 11440), (1976, 11110), (2020, 10868), (2090, 10504), (2222, 9880), (2288, 9595), (2470, 8888), (2626, 8360), (2717, 8080), (2860, 7676), (3344, 6565), (3838, 5720), (3952, 5555), (4040, 5434), (4180, 5252), (4444, 4940)]