19980399

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{9341}}^1$

素因数の和:9398

約数の個数: 16

約数和(自身を含む): 28698624

約数和(自身を除く): 8718225

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 9341, 28023, 214843, 289571, 644529, 868713, 6660133, 19980399]

約数ペア:

[(1, 19980399), (3, 6660133), (23, 868713), (31, 644529), (69, 289571), (93, 214843), (713, 28023), (2139, 9341)]