20497407

素因数分解:

$3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{3449}}^1$

素因数の和:3742

約数の個数: 16

約数和(自身を含む): 31353600

約数和(自身を除く): 10856193

約数列:

[1, 3, 7, 21, 283, 849, 1981, 3449, 5943, 10347, 24143, 72429, 976067, 2928201, 6832469, 20497407]

約数ペア:

[(1, 20497407), (3, 6832469), (7, 2928201), (21, 976067), (283, 72429), (849, 24143), (1981, 10347), (3449, 5943)]