217541863

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{11821}}^1$

素因数の和:12078

約数の個数: 16

約数和(自身を含む): 272378880

約数和(自身を除く): 54837017

約数列:

[1, 7, 11, 77, 239, 1673, 2629, 11821, 18403, 82747, 130031, 910217, 2825219, 19776533, 31077409, 217541863]

約数ペア:

[(1, 217541863), (7, 31077409), (11, 19776533), (77, 2825219), (239, 910217), (1673, 130031), (2629, 82747), (11821, 18403)]