15978627

素因数分解:

$3^4\times 7^1\times {\mathrm{28181}}^1$

素因数の和:28200

約数の個数: 20

約数和(自身を含む): 27280176

約数和(自身を除く): 11301549

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 28181, 84543, 197267, 253629, 591801, 760887, 1775403, 2282661, 5326209, 15978627]

約数ペア:

[(1, 15978627), (3, 5326209), (7, 2282661), (9, 1775403), (21, 760887), (27, 591801), (63, 253629), (81, 197267), (189, 84543), (567, 28181)]