81991897

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2423}}^1$

素因数の和:2592

約数の個数: 16

約数和(自身を含む): 93663360

約数和(自身を除く): 11671463

約数列:

[1, 13, 19, 137, 247, 1781, 2423, 2603, 31499, 33839, 46037, 331951, 598481, 4315363, 6307069, 81991897]

約数ペア:

[(1, 81991897), (13, 6307069), (19, 4315363), (137, 598481), (247, 331951), (1781, 46037), (2423, 33839), (2603, 31499)]