18939885

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{21401}}^1$

素因数の和:21468

約数の個数: 16

約数和(自身を含む): 30818880

約数和(自身を除く): 11878995

約数列:

[1, 3, 5, 15, 59, 177, 295, 885, 21401, 64203, 107005, 321015, 1262659, 3787977, 6313295, 18939885]

約数ペア:

[(1, 18939885), (3, 6313295), (5, 3787977), (15, 1262659), (59, 321015), (177, 107005), (295, 64203), (885, 21401)]