19781349

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2539}}^1$

素因数の和:2609

約数の個数: 24

約数和(自身を含む): 31272480

約数和(自身を除く): 11491131

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2539, 2597, 7617, 7791, 17773, 53319, 124411, 134567, 373233, 403701, 941969, 2825907, 6593783, 19781349]

約数ペア:

[(1, 19781349), (3, 6593783), (7, 2825907), (21, 941969), (49, 403701), (53, 373233), (147, 134567), (159, 124411), (371, 53319), (1113, 17773), (2539, 7791), (2597, 7617)]