20491375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{9643}}^1$

素因数の和:9675

約数の個数: 16

約数和(自身を含む): 27080352

約数和(自身を除く): 6588977

約数列:

[1, 5, 17, 25, 85, 125, 425, 2125, 9643, 48215, 163931, 241075, 819655, 1205375, 4098275, 20491375]

約数ペア:

[(1, 20491375), (5, 4098275), (17, 1205375), (25, 819655), (85, 241075), (125, 163931), (425, 48215), (2125, 9643)]