261220509

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{571}}^1\times {\mathrm{4621}}^1$

素因数の和:5209

約数の個数: 24

約数和(自身を含む): 412430304

約数和(自身を除く): 151209795

約数列:

[1, 3, 9, 11, 33, 99, 571, 1713, 4621, 5139, 6281, 13863, 18843, 41589, 50831, 56529, 152493, 457479, 2638591, 7915773, 23747319, 29024501, 87073503, 261220509]

約数ペア:

[(1, 261220509), (3, 87073503), (9, 29024501), (11, 23747319), (33, 7915773), (99, 2638591), (571, 457479), (1713, 152493), (4621, 56529), (5139, 50831), (6281, 41589), (13863, 18843)]