21971248

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1447}}^1$

素因数の和:1541

約数の個数: 40

約数和(自身を含む): 46503968

約数和(自身を除く): 24532720

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1447, 1898, 2894, 3796, 5788, 7592, 11576, 15184, 18811, 23152, 37622, 75244, 105631, 150488, 211262, 300976, 422524, 845048, 1373203, 1690096, 2746406, 5492812, 10985624, 21971248]

約数ペア:

[(1, 21971248), (2, 10985624), (4, 5492812), (8, 2746406), (13, 1690096), (16, 1373203), (26, 845048), (52, 422524), (73, 300976), (104, 211262), (146, 150488), (208, 105631), (292, 75244), (584, 37622), (949, 23152), (1168, 18811), (1447, 15184), (1898, 11576), (2894, 7592), (3796, 5788)]