20728095

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19463}}^1$

素因数の和:19542

約数の個数: 16

約数和(自身を含む): 33633792

約数和(自身を除く): 12905697

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19463, 58389, 97315, 291945, 1381873, 4145619, 6909365, 20728095]

約数ペア:

[(1, 20728095), (3, 6909365), (5, 4145619), (15, 1381873), (71, 291945), (213, 97315), (355, 58389), (1065, 19463)]