20197588

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^2$

素因数の和:208

約数の個数: 36

約数和(自身を含む): 38132640

約数和(自身を除く): 17935052

約数列:

[1, 2, 4, 23, 46, 59, 61, 92, 118, 122, 236, 244, 1357, 1403, 2714, 2806, 3599, 3721, 5428, 5612, 7198, 7442, 14396, 14884, 82777, 85583, 165554, 171166, 219539, 331108, 342332, 439078, 878156, 5049397, 10098794, 20197588]

約数ペア:

[(1, 20197588), (2, 10098794), (4, 5049397), (23, 878156), (46, 439078), (59, 342332), (61, 331108), (92, 219539), (118, 171166), (122, 165554), (236, 85583), (244, 82777), (1357, 14884), (1403, 14396), (2714, 7442), (2806, 7198), (3599, 5612), (3721, 5428)]