19921857

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1\times {\mathrm{397}}^1$

素因数の和:832

約数の個数: 16

約数和(自身を含む): 27318720

約数和(自身を除く): 7396863

約数列:

[1, 3, 43, 129, 389, 397, 1167, 1191, 16727, 17071, 50181, 51213, 154433, 463299, 6640619, 19921857]

約数ペア:

[(1, 19921857), (3, 6640619), (43, 463299), (129, 154433), (389, 51213), (397, 50181), (1167, 17071), (1191, 16727)]