18621778

素因数分解:

$2^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{12203}}^1$

素因数の和:12321

約数の個数: 16

約数和(自身を含む): 32218560

約数和(自身を除く): 13596782

約数列:

[1, 2, 7, 14, 109, 218, 763, 1526, 12203, 24406, 85421, 170842, 1330127, 2660254, 9310889, 18621778]

約数ペア:

[(1, 18621778), (2, 9310889), (7, 2660254), (14, 1330127), (109, 170842), (218, 85421), (763, 24406), (1526, 12203)]