19905231

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1\times {\mathrm{593}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 27143424

約数和(自身を除く): 7238193

約数列:

[1, 3, 67, 167, 201, 501, 593, 1779, 11189, 33567, 39731, 99031, 119193, 297093, 6635077, 19905231]

約数ペア:

[(1, 19905231), (3, 6635077), (67, 297093), (167, 119193), (201, 99031), (501, 39731), (593, 33567), (1779, 11189)]