218960021

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{337}}^1\times {\mathrm{919}}^1$

素因数の和:1364

約数の個数: 16

約数和(自身を含む): 253743360

約数和(自身を除く): 34783339

約数列:

[1, 7, 101, 337, 707, 919, 2359, 6433, 34037, 92819, 238259, 309703, 649733, 2167921, 31280003, 218960021]

約数ペア:

[(1, 218960021), (7, 31280003), (101, 2167921), (337, 649733), (707, 309703), (919, 238259), (2359, 92819), (6433, 34037)]