21907497

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1\times {\mathrm{653}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 29947968

約数和(自身を除く): 8040471

約数列:

[1, 3, 53, 159, 211, 633, 653, 1959, 11183, 33549, 34609, 103827, 137783, 413349, 7302499, 21907497]

約数ペア:

[(1, 21907497), (3, 7302499), (53, 413349), (159, 137783), (211, 103827), (633, 34609), (653, 33549), (1959, 11183)]