21486783

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1\times {\mathrm{401}}^1$

素因数の和:794

約数の個数: 16

約数和(自身を含む): 29349216

約数和(自身を除く): 7862433

約数列:

[1, 3, 53, 159, 337, 401, 1011, 1203, 17861, 21253, 53583, 63759, 135137, 405411, 7162261, 21486783]

約数ペア:

[(1, 21486783), (3, 7162261), (53, 405411), (159, 135137), (337, 63759), (401, 53583), (1011, 21253), (1203, 17861)]