20990312

素因数分解:

$2^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{6353}}^1$

素因数の和:6425

約数の個数: 32

約数和(自身を含む): 45748800

約数和(自身を除く): 24758488

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 59, 118, 236, 413, 472, 826, 1652, 3304, 6353, 12706, 25412, 44471, 50824, 88942, 177884, 355768, 374827, 749654, 1499308, 2623789, 2998616, 5247578, 10495156, 20990312]

約数ペア:

[(1, 20990312), (2, 10495156), (4, 5247578), (7, 2998616), (8, 2623789), (14, 1499308), (28, 749654), (56, 374827), (59, 355768), (118, 177884), (236, 88942), (413, 50824), (472, 44471), (826, 25412), (1652, 12706), (3304, 6353)]