21556728

素因数分解:

$2^3\times 3^2\times {\mathrm{157}}^1\times {\mathrm{1907}}^1$

素因数の和:2076

約数の個数: 48

約数和(自身を含む): 58785480

約数和(自身を除く): 37228752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 157, 314, 471, 628, 942, 1256, 1413, 1884, 1907, 2826, 3768, 3814, 5652, 5721, 7628, 11304, 11442, 15256, 17163, 22884, 34326, 45768, 68652, 137304, 299399, 598798, 898197, 1197596, 1796394, 2395192, 2694591, 3592788, 5389182, 7185576, 10778364, 21556728]

約数ペア:

[(1, 21556728), (2, 10778364), (3, 7185576), (4, 5389182), (6, 3592788), (8, 2694591), (9, 2395192), (12, 1796394), (18, 1197596), (24, 898197), (36, 598798), (72, 299399), (157, 137304), (314, 68652), (471, 45768), (628, 34326), (942, 22884), (1256, 17163), (1413, 15256), (1884, 11442), (1907, 11304), (2826, 7628), (3768, 5721), (3814, 5652)]