20506712

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 40100400

約数和(自身を除く): 19593688

約数列:

[1, 2, 4, 8, 29, 58, 116, 157, 232, 314, 563, 628, 1126, 1256, 2252, 4504, 4553, 9106, 16327, 18212, 32654, 36424, 65308, 88391, 130616, 176782, 353564, 707128, 2563339, 5126678, 10253356, 20506712]

約数ペア:

[(1, 20506712), (2, 10253356), (4, 5126678), (8, 2563339), (29, 707128), (58, 353564), (116, 176782), (157, 130616), (232, 88391), (314, 65308), (563, 36424), (628, 32654), (1126, 18212), (1256, 16327), (2252, 9106), (4504, 4553)]