278360721

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{229}}^1\times {\mathrm{1031}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 407309760

約数和(自身を除く): 128949039

約数列:

[1, 3, 9, 131, 229, 393, 687, 1031, 1179, 2061, 3093, 9279, 29999, 89997, 135061, 236099, 269991, 405183, 708297, 1215549, 2124891, 30928969, 92786907, 278360721]

約数ペア:

[(1, 278360721), (3, 92786907), (9, 30928969), (131, 2124891), (229, 1215549), (393, 708297), (687, 405183), (1031, 269991), (1179, 236099), (2061, 135061), (3093, 89997), (9279, 29999)]