18728738

素因数分解:

$2^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{2087}}^1$

素因数の和:2737

約数の個数: 16

約数和(自身を含む): 32171904

約数和(自身を除く): 13443166

約数列:

[1, 2, 7, 14, 641, 1282, 2087, 4174, 4487, 8974, 14609, 29218, 1337767, 2675534, 9364369, 18728738]

約数ペア:

[(1, 18728738), (2, 9364369), (7, 2675534), (14, 1337767), (641, 29218), (1282, 14609), (2087, 8974), (4174, 4487)]