18104877

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{863}}^1$

素因数の和:919

約数の個数: 40

約数和(自身を含む): 31781376

約数和(自身を除く): 13676499

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 863, 999, 2331, 2589, 2997, 6041, 6993, 7767, 18123, 20979, 23301, 31931, 54369, 69903, 95793, 163107, 223517, 287379, 489321, 670551, 862137, 2011653, 2586411, 6034959, 18104877]

約数ペア:

[(1, 18104877), (3, 6034959), (7, 2586411), (9, 2011653), (21, 862137), (27, 670551), (37, 489321), (63, 287379), (81, 223517), (111, 163107), (189, 95793), (259, 69903), (333, 54369), (567, 31931), (777, 23301), (863, 20979), (999, 18123), (2331, 7767), (2589, 6993), (2997, 6041)]