18720478

素因数分解:

$2^1\times 7^1\times {\mathrm{829}}^1\times {\mathrm{1613}}^1$

素因数の和:2451

約数の個数: 16

約数和(自身を含む): 32150880

約数和(自身を除く): 13430402

約数列:

[1, 2, 7, 14, 829, 1613, 1658, 3226, 5803, 11291, 11606, 22582, 1337177, 2674354, 9360239, 18720478]

約数ペア:

[(1, 18720478), (2, 9360239), (7, 2674354), (14, 1337177), (829, 22582), (1613, 11606), (1658, 11291), (3226, 5803)]