20407156

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1123}}^1$

素因数の和:1204

約数の個数: 48

約数和(自身を含む): 45319680

約数和(自身を除く): 24912524

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 59, 77, 118, 154, 236, 308, 413, 649, 826, 1123, 1298, 1652, 2246, 2596, 4492, 4543, 7861, 9086, 12353, 15722, 18172, 24706, 31444, 49412, 66257, 86471, 132514, 172942, 265028, 345884, 463799, 728827, 927598, 1457654, 1855196, 2915308, 5101789, 10203578, 20407156]

約数ペア:

[(1, 20407156), (2, 10203578), (4, 5101789), (7, 2915308), (11, 1855196), (14, 1457654), (22, 927598), (28, 728827), (44, 463799), (59, 345884), (77, 265028), (118, 172942), (154, 132514), (236, 86471), (308, 66257), (413, 49412), (649, 31444), (826, 24706), (1123, 18172), (1298, 15722), (1652, 12353), (2246, 9086), (2596, 7861), (4492, 4543)]