19911766

素因数分解:

$2^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{9419}}^1$

素因数の和:9579

約数の個数: 16

約数和(自身を含む): 34364160

約数和(自身を除く): 14452394

約数列:

[1, 2, 7, 14, 151, 302, 1057, 2114, 9419, 18838, 65933, 131866, 1422269, 2844538, 9955883, 19911766]

約数ペア:

[(1, 19911766), (2, 9955883), (7, 2844538), (14, 1422269), (151, 131866), (302, 65933), (1057, 18838), (2114, 9419)]