18397295

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1231}}^1$

素因数の和:1311

約数の個数: 24

約数和(自身を含む): 26123328

約数和(自身を除く): 7726033

約数列:

[1, 5, 7, 35, 49, 61, 245, 305, 427, 1231, 2135, 2989, 6155, 8617, 14945, 43085, 60319, 75091, 301595, 375455, 525637, 2628185, 3679459, 18397295]

約数ペア:

[(1, 18397295), (5, 3679459), (7, 2628185), (35, 525637), (49, 375455), (61, 301595), (245, 75091), (305, 60319), (427, 43085), (1231, 14945), (2135, 8617), (2989, 6155)]