420579

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:467

約数の個数: 16

約数和(自身を含む): 641440

約数和(自身を除く): 220861

約数列:

[1, 3, 9, 27, 37, 111, 333, 421, 999, 1263, 3789, 11367, 15577, 46731, 140193, 420579]

約数ペア:

[(1, 420579), (3, 140193), (9, 46731), (27, 15577), (37, 11367), (111, 3789), (333, 1263), (421, 999)]