2155307

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1217}}^1$

素因数の和:1258

約数の個数: 16

約数和(自身を含む): 2806272

約数和(自身を除く): 650965

約数列:

[1, 7, 11, 23, 77, 161, 253, 1217, 1771, 8519, 13387, 27991, 93709, 195937, 307901, 2155307]

約数ペア:

[(1, 2155307), (7, 307901), (11, 195937), (23, 93709), (77, 27991), (161, 13387), (253, 8519), (1217, 1771)]