20487975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16069}}^1$

素因数の和:16099

約数の個数: 24

約数和(自身を含む): 35868240

約数和(自身を除く): 15380265

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16069, 48207, 80345, 241035, 273173, 401725, 819519, 1205175, 1365865, 4097595, 6829325, 20487975]

約数ペア:

[(1, 20487975), (3, 6829325), (5, 4097595), (15, 1365865), (17, 1205175), (25, 819519), (51, 401725), (75, 273173), (85, 241035), (255, 80345), (425, 48207), (1275, 16069)]