20148947

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{673}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 25816896

約数和(自身を除く): 5667949

約数列:

[1, 7, 13, 47, 49, 91, 329, 611, 637, 673, 2303, 4277, 4711, 8749, 29939, 31631, 32977, 61243, 221417, 411203, 428701, 1549919, 2878421, 20148947]

約数ペア:

[(1, 20148947), (7, 2878421), (13, 1549919), (47, 428701), (49, 411203), (91, 221417), (329, 61243), (611, 32977), (637, 31631), (673, 29939), (2303, 8749), (4277, 4711)]