256860981

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{115547}}^1$

素因数の和:115585

約数の個数: 24

約数和(自身を含む): 420594720

約数和(自身を除く): 163733739

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 115547, 346641, 1039923, 1502111, 2195393, 4506333, 6586179, 13518999, 19758537, 28540109, 85620327, 256860981]

約数ペア:

[(1, 256860981), (3, 85620327), (9, 28540109), (13, 19758537), (19, 13518999), (39, 6586179), (57, 4506333), (117, 2195393), (171, 1502111), (247, 1039923), (741, 346641), (2223, 115547)]