21121408

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2143}}^1$

素因数の和:2175

約数の個数: 64

約数和(自身を含む): 52485120

約数和(自身を除く): 31363712

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 308, 352, 448, 616, 704, 896, 1232, 1408, 2143, 2464, 4286, 4928, 8572, 9856, 15001, 17144, 23573, 30002, 34288, 47146, 60004, 68576, 94292, 120008, 137152, 165011, 188584, 240016, 274304, 330022, 377168, 480032, 660044, 754336, 960064, 1320088, 1508672, 1920128, 2640176, 3017344, 5280352, 10560704, 21121408]

約数ペア:

[(1, 21121408), (2, 10560704), (4, 5280352), (7, 3017344), (8, 2640176), (11, 1920128), (14, 1508672), (16, 1320088), (22, 960064), (28, 754336), (32, 660044), (44, 480032), (56, 377168), (64, 330022), (77, 274304), (88, 240016), (112, 188584), (128, 165011), (154, 137152), (176, 120008), (224, 94292), (308, 68576), (352, 60004), (448, 47146), (616, 34288), (704, 30002), (896, 23573), (1232, 17144), (1408, 15001), (2143, 9856), (2464, 8572), (4286, 4928)]