21375393

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{3491}}^1$

素因数の和:3664

約数の個数: 16

約数和(自身を含む): 30897216

約数和(自身を除く): 9521823

約数列:

[1, 3, 13, 39, 157, 471, 2041, 3491, 6123, 10473, 45383, 136149, 548087, 1644261, 7125131, 21375393]

約数ペア:

[(1, 21375393), (3, 7125131), (13, 1644261), (39, 548087), (157, 136149), (471, 45383), (2041, 10473), (3491, 6123)]