19757517

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3989}}^1$

素因数の和:4132

約数の個数: 16

約数和(自身を含む): 28600320

約数和(自身を除く): 8842803

約数列:

[1, 3, 13, 39, 127, 381, 1651, 3989, 4953, 11967, 51857, 155571, 506603, 1519809, 6585839, 19757517]

約数ペア:

[(1, 19757517), (3, 6585839), (13, 1519809), (39, 506603), (127, 155571), (381, 51857), (1651, 11967), (3989, 4953)]