180518

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 16

約数和(自身を含む): 299376

約数和(自身を除く): 118858

約数列:

[1, 2, 13, 26, 53, 106, 131, 262, 689, 1378, 1703, 3406, 6943, 13886, 90259, 180518]

約数ペア:

[(1, 180518), (2, 90259), (13, 13886), (26, 6943), (53, 3406), (106, 1703), (131, 1378), (262, 689)]