21577864

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1523}}^1$

素因数の和:1570

約数の個数: 64

約数和(自身を含む): 52669440

約数和(自身を除く): 31091576

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 44, 46, 56, 77, 88, 92, 154, 161, 184, 253, 308, 322, 506, 616, 644, 1012, 1288, 1523, 1771, 2024, 3046, 3542, 6092, 7084, 10661, 12184, 14168, 16753, 21322, 33506, 35029, 42644, 67012, 70058, 85288, 117271, 134024, 140116, 234542, 245203, 280232, 385319, 469084, 490406, 770638, 938168, 980812, 1541276, 1961624, 2697233, 3082552, 5394466, 10788932, 21577864]

約数ペア:

[(1, 21577864), (2, 10788932), (4, 5394466), (7, 3082552), (8, 2697233), (11, 1961624), (14, 1541276), (22, 980812), (23, 938168), (28, 770638), (44, 490406), (46, 469084), (56, 385319), (77, 280232), (88, 245203), (92, 234542), (154, 140116), (161, 134024), (184, 117271), (253, 85288), (308, 70058), (322, 67012), (506, 42644), (616, 35029), (644, 33506), (1012, 21322), (1288, 16753), (1523, 14168), (1771, 12184), (2024, 10661), (3046, 7084), (3542, 6092)]