18288417

素因数分解:

$3^1\times 7^4\times {\mathrm{2539}}^1$

素因数の和:2570

約数の個数: 20

約数和(自身を含む): 28458160

約数和(自身を除く): 10169743

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2539, 7203, 7617, 17773, 53319, 124411, 373233, 870877, 2612631, 6096139, 18288417]

約数ペア:

[(1, 18288417), (3, 6096139), (7, 2612631), (21, 870877), (49, 373233), (147, 124411), (343, 53319), (1029, 17773), (2401, 7617), (2539, 7203)]