161720156

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{239231}}^1$

素因数の和:239261

約数の個数: 18

約数和(自身を含む): 306456192

約数和(自身を除く): 144736036

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 239231, 478462, 956924, 3110003, 6220006, 12440012, 40430039, 80860078, 161720156]

約数ペア:

[(1, 161720156), (2, 80860078), (4, 40430039), (13, 12440012), (26, 6220006), (52, 3110003), (169, 956924), (338, 478462), (676, 239231)]