123478891

素因数分解:

${\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1\times {\mathrm{223}}^1$

素因数の和:586

約数の個数: 16

約数和(自身を含む): 132106240

約数和(自身を除く): 8627349

約数列:

[1, 19, 151, 193, 223, 2869, 3667, 4237, 29143, 33673, 43039, 553717, 639787, 817741, 6498889, 123478891]

約数ペア:

[(1, 123478891), (19, 6498889), (151, 817741), (193, 639787), (223, 553717), (2869, 43039), (3667, 33673), (4237, 29143)]