210977980

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{15959}}^1$

素因数の和:16629

約数の個数: 24

約数和(自身を含む): 443751840

約数和(自身を除く): 232773860

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6610, 13220, 15959, 31918, 63836, 79795, 159590, 319180, 10548899, 21097798, 42195596, 52744495, 105488990, 210977980]

約数ペア:

[(1, 210977980), (2, 105488990), (4, 52744495), (5, 42195596), (10, 21097798), (20, 10548899), (661, 319180), (1322, 159590), (2644, 79795), (3305, 63836), (6610, 31918), (13220, 15959)]