21137312

素因数分解:

$2^5\times 7^1\times {\mathrm{197}}^1\times {\mathrm{479}}^1$

素因数の和:693

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26762848

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 197, 224, 394, 479, 788, 958, 1379, 1576, 1916, 2758, 3152, 3353, 3832, 5516, 6304, 6706, 7664, 11032, 13412, 15328, 22064, 26824, 44128, 53648, 94363, 107296, 188726, 377452, 660541, 754904, 1321082, 1509808, 2642164, 3019616, 5284328, 10568656, 21137312]

約数ペア:

[(1, 21137312), (2, 10568656), (4, 5284328), (7, 3019616), (8, 2642164), (14, 1509808), (16, 1321082), (28, 754904), (32, 660541), (56, 377452), (112, 188726), (197, 107296), (224, 94363), (394, 53648), (479, 44128), (788, 26824), (958, 22064), (1379, 15328), (1576, 13412), (1916, 11032), (2758, 7664), (3152, 6706), (3353, 6304), (3832, 5516)]