81137619

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{52721}}^1$

素因数の和:52752

約数の個数: 20

約数和(自身を含む): 127587240

約数和(自身を除く): 46449621

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 52721, 158163, 474489, 1001699, 1423467, 3005097, 4270401, 9015291, 27045873, 81137619]

約数ペア:

[(1, 81137619), (3, 27045873), (9, 9015291), (19, 4270401), (27, 3005097), (57, 1423467), (81, 1001699), (171, 474489), (513, 158163), (1539, 52721)]