20814794

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 43206912

約数和(自身を除く): 22392118

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 37, 74, 77, 91, 143, 154, 182, 259, 281, 286, 407, 481, 518, 562, 814, 962, 1001, 1967, 2002, 2849, 3091, 3367, 3653, 3934, 5291, 5698, 6182, 6734, 7306, 10397, 10582, 20794, 21637, 25571, 37037, 40183, 43274, 51142, 72779, 74074, 80366, 114367, 135161, 145558, 228734, 270322, 281281, 562562, 800569, 946127, 1486771, 1601138, 1892254, 2973542, 10407397, 20814794]

約数ペア:

[(1, 20814794), (2, 10407397), (7, 2973542), (11, 1892254), (13, 1601138), (14, 1486771), (22, 946127), (26, 800569), (37, 562562), (74, 281281), (77, 270322), (91, 228734), (143, 145558), (154, 135161), (182, 114367), (259, 80366), (281, 74074), (286, 72779), (407, 51142), (481, 43274), (518, 40183), (562, 37037), (814, 25571), (962, 21637), (1001, 20794), (1967, 10582), (2002, 10397), (2849, 7306), (3091, 6734), (3367, 6182), (3653, 5698), (3934, 5291)]