20859148

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 37189152

約数和(自身を除く): 16330004

約数列:

[1, 2, 4, 103, 197, 206, 257, 394, 412, 514, 788, 1028, 20291, 26471, 40582, 50629, 52942, 81164, 101258, 105884, 202516, 5214787, 10429574, 20859148]

約数ペア:

[(1, 20859148), (2, 10429574), (4, 5214787), (103, 202516), (197, 105884), (206, 101258), (257, 81164), (394, 52942), (412, 50629), (514, 40582), (788, 26471), (1028, 20291)]