1561437

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:570

約数の個数: 20

約数和(自身を含む): 2400156

約数和(自身を除く): 838719

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 521, 999, 1563, 2997, 4689, 14067, 19277, 42201, 57831, 173493, 520479, 1561437]

約数ペア:

[(1, 1561437), (3, 520479), (9, 173493), (27, 57831), (37, 42201), (81, 19277), (111, 14067), (333, 4689), (521, 2997), (999, 1563)]