2780999

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:238

約数の個数: 16

約数和(自身を含む): 3193344

約数和(自身を除く): 412345

約数列:

[1, 13, 23, 71, 131, 299, 923, 1633, 1703, 3013, 9301, 21229, 39169, 120913, 213923, 2780999]

約数ペア:

[(1, 2780999), (13, 213923), (23, 120913), (71, 39169), (131, 21229), (299, 9301), (923, 3013), (1633, 1703)]