20754448

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 48496896

約数和(自身を除く): 27742448

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 47, 52, 88, 94, 104, 143, 176, 188, 193, 208, 286, 376, 386, 517, 572, 611, 752, 772, 1034, 1144, 1222, 1544, 2068, 2123, 2288, 2444, 2509, 3088, 4136, 4246, 4888, 5018, 6721, 8272, 8492, 9071, 9776, 10036, 13442, 16984, 18142, 20072, 26884, 27599, 33968, 36284, 40144, 53768, 55198, 72568, 99781, 107536, 110396, 117923, 145136, 199562, 220792, 235846, 399124, 441584, 471692, 798248, 943384, 1297153, 1596496, 1886768, 2594306, 5188612, 10377224, 20754448]

約数ペア:

[(1, 20754448), (2, 10377224), (4, 5188612), (8, 2594306), (11, 1886768), (13, 1596496), (16, 1297153), (22, 943384), (26, 798248), (44, 471692), (47, 441584), (52, 399124), (88, 235846), (94, 220792), (104, 199562), (143, 145136), (176, 117923), (188, 110396), (193, 107536), (208, 99781), (286, 72568), (376, 55198), (386, 53768), (517, 40144), (572, 36284), (611, 33968), (752, 27599), (772, 26884), (1034, 20072), (1144, 18142), (1222, 16984), (1544, 13442), (2068, 10036), (2123, 9776), (2288, 9071), (2444, 8492), (2509, 8272), (3088, 6721), (4136, 5018), (4246, 4888)]