20044520

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1601}}^1$

素因数の和:1925

約数の個数: 32

約数和(自身を含む): 45272520

約数和(自身を除く): 25228000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1601, 2504, 3130, 3202, 6260, 6404, 8005, 12520, 12808, 16010, 32020, 64040, 501113, 1002226, 2004452, 2505565, 4008904, 5011130, 10022260, 20044520]

約数ペア:

[(1, 20044520), (2, 10022260), (4, 5011130), (5, 4008904), (8, 2505565), (10, 2004452), (20, 1002226), (40, 501113), (313, 64040), (626, 32020), (1252, 16010), (1565, 12808), (1601, 12520), (2504, 8005), (3130, 6404), (3202, 6260)]