21064983

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1\times {\mathrm{479}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 28615680

約数和(自身を除く): 7550697

約数列:

[1, 3, 107, 137, 321, 411, 479, 1437, 14659, 43977, 51253, 65623, 153759, 196869, 7021661, 21064983]

約数ペア:

[(1, 21064983), (3, 7021661), (107, 196869), (137, 153759), (321, 65623), (411, 51253), (479, 43977), (1437, 14659)]