2780475

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 4648512

約数和(自身を除く): 1868037

約数列:

[1, 3, 5, 15, 25, 75, 131, 283, 393, 655, 849, 1415, 1965, 3275, 4245, 7075, 9825, 21225, 37073, 111219, 185365, 556095, 926825, 2780475]

約数ペア:

[(1, 2780475), (3, 926825), (5, 556095), (15, 185365), (25, 111219), (75, 37073), (131, 21225), (283, 9825), (393, 7075), (655, 4245), (849, 3275), (1415, 1965)]