18979209

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{331}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 28796352

約数和(自身を除く): 9817143

約数列:

[1, 3, 9, 23, 69, 207, 277, 331, 831, 993, 2493, 2979, 6371, 7613, 19113, 22839, 57339, 68517, 91687, 275061, 825183, 2108801, 6326403, 18979209]

約数ペア:

[(1, 18979209), (3, 6326403), (9, 2108801), (23, 825183), (69, 275061), (207, 91687), (277, 68517), (331, 57339), (831, 22839), (993, 19113), (2493, 7613), (2979, 6371)]