208432940

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{26251}}^1$

素因数の和:26657

約数の個数: 24

約数和(自身を含む): 438828432

約数和(自身を除く): 230395492

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 26251, 52502, 105004, 131255, 262510, 525020, 10421647, 20843294, 41686588, 52108235, 104216470, 208432940]

約数ペア:

[(1, 208432940), (2, 104216470), (4, 52108235), (5, 41686588), (10, 20843294), (20, 10421647), (397, 525020), (794, 262510), (1588, 131255), (1985, 105004), (3970, 52502), (7940, 26251)]