18921867

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{563}}^1\times {\mathrm{659}}^1$

素因数の和:1242

約数の個数: 16

約数和(自身を含む): 26801280

約数和(自身を除く): 7879413

約数列:

[1, 3, 17, 51, 563, 659, 1689, 1977, 9571, 11203, 28713, 33609, 371017, 1113051, 6307289, 18921867]

約数ペア:

[(1, 18921867), (3, 6307289), (17, 1113051), (51, 371017), (563, 33609), (659, 28713), (1689, 11203), (1977, 9571)]