21576016

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 80

約数和(自身を含む): 52996608

約数和(自身を除く): 31420592

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 83, 88, 112, 154, 166, 176, 211, 308, 332, 422, 581, 616, 664, 844, 913, 1162, 1232, 1328, 1477, 1688, 1826, 2321, 2324, 2954, 3376, 3652, 4642, 4648, 5908, 6391, 7304, 9284, 9296, 11816, 12782, 14608, 16247, 17513, 18568, 23632, 25564, 32494, 35026, 37136, 51128, 64988, 70052, 102256, 122591, 129976, 140104, 192643, 245182, 259952, 280208, 385286, 490364, 770572, 980728, 1348501, 1541144, 1961456, 2697002, 3082288, 5394004, 10788008, 21576016]

約数ペア:

[(1, 21576016), (2, 10788008), (4, 5394004), (7, 3082288), (8, 2697002), (11, 1961456), (14, 1541144), (16, 1348501), (22, 980728), (28, 770572), (44, 490364), (56, 385286), (77, 280208), (83, 259952), (88, 245182), (112, 192643), (154, 140104), (166, 129976), (176, 122591), (211, 102256), (308, 70052), (332, 64988), (422, 51128), (581, 37136), (616, 35026), (664, 32494), (844, 25564), (913, 23632), (1162, 18568), (1232, 17513), (1328, 16247), (1477, 14608), (1688, 12782), (1826, 11816), (2321, 9296), (2324, 9284), (2954, 7304), (3376, 6391), (3652, 5908), (4642, 4648)]