21168847

素因数分解:

$7^1\times {\mathrm{37}}^2\times {\mathrm{47}}^2$

素因数の和:175

約数の個数: 18

約数和(自身を含む): 25404792

約数和(自身を除く): 4235945

約数列:

[1, 7, 37, 47, 259, 329, 1369, 1739, 2209, 9583, 12173, 15463, 64343, 81733, 450401, 572131, 3024121, 21168847]

約数ペア:

[(1, 21168847), (7, 3024121), (37, 572131), (47, 450401), (259, 81733), (329, 64343), (1369, 15463), (1739, 12173), (2209, 9583)]