28172795

素因数分解:

$5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1949}}^1$

素因数の和:2027

約数の個数: 24

約数和(自身を含む): 40014000

約数和(自身を除く): 11841205

約数列:

[1, 5, 7, 35, 49, 59, 245, 295, 413, 1949, 2065, 2891, 9745, 13643, 14455, 68215, 95501, 114991, 477505, 574955, 804937, 4024685, 5634559, 28172795]

約数ペア:

[(1, 28172795), (5, 5634559), (7, 4024685), (35, 804937), (49, 574955), (59, 477505), (245, 114991), (295, 95501), (413, 68215), (1949, 14455), (2065, 13643), (2891, 9745)]