21197325

素因数分解:

$3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{2063}}^1$

素因数の和:2213

約数の個数: 24

約数和(自身を含む): 35319168

約数和(自身を除く): 14121843

約数列:

[1, 3, 5, 15, 25, 75, 137, 411, 685, 2055, 2063, 3425, 6189, 10275, 10315, 30945, 51575, 154725, 282631, 847893, 1413155, 4239465, 7065775, 21197325]

約数ペア:

[(1, 21197325), (3, 7065775), (5, 4239465), (15, 1413155), (25, 847893), (75, 282631), (137, 154725), (411, 51575), (685, 30945), (2055, 10315), (2063, 10275), (3425, 6189)]