20805688

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{8999}}^1$

素因数の和:9039

約数の個数: 24

約数和(自身を含む): 41445000

約数和(自身を除く): 20639312

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 8999, 17998, 35996, 71992, 152983, 305966, 611932, 1223864, 2600711, 5201422, 10402844, 20805688]

約数ペア:

[(1, 20805688), (2, 10402844), (4, 5201422), (8, 2600711), (17, 1223864), (34, 611932), (68, 305966), (136, 152983), (289, 71992), (578, 35996), (1156, 17998), (2312, 8999)]