213942843

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{331}}^1\times {\mathrm{647}}^1$

素因数の和:1024

約数の個数: 32

約数和(自身を含む): 327006720

約数和(自身を除く): 113063877

約数列:

[1, 3, 9, 27, 37, 111, 331, 333, 647, 993, 999, 1941, 2979, 5823, 8937, 12247, 17469, 23939, 36741, 71817, 110223, 214157, 215451, 330669, 642471, 646353, 1927413, 5782239, 7923809, 23771427, 71314281, 213942843]

約数ペア:

[(1, 213942843), (3, 71314281), (9, 23771427), (27, 7923809), (37, 5782239), (111, 1927413), (331, 646353), (333, 642471), (647, 330669), (993, 215451), (999, 214157), (1941, 110223), (2979, 71817), (5823, 36741), (8937, 23939), (12247, 17469)]