78539139

素因数分解:

$3^4\times 7^1\times {\mathrm{138517}}^1$

素因数の和:138536

約数の個数: 20

約数和(自身を含む): 134085424

約数和(自身を除く): 55546285

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 138517, 415551, 969619, 1246653, 2908857, 3739959, 8726571, 11219877, 26179713, 78539139]

約数ペア:

[(1, 78539139), (3, 26179713), (7, 11219877), (9, 8726571), (21, 3739959), (27, 2908857), (63, 1246653), (81, 969619), (189, 415551), (567, 138517)]