3887919

素因数分解:

$3^4\times 7^1\times {\mathrm{6857}}^1$

素因数の和:6876

約数の個数: 20

約数和(自身を含む): 6638544

約数和(自身を除く): 2750625

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 6857, 20571, 47999, 61713, 143997, 185139, 431991, 555417, 1295973, 3887919]

約数ペア:

[(1, 3887919), (3, 1295973), (7, 555417), (9, 431991), (21, 185139), (27, 143997), (63, 61713), (81, 47999), (189, 20571), (567, 6857)]