19964642

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1\times {\mathrm{863}}^1$

素因数の和:1177

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 10828318

約数列:

[1, 2, 43, 86, 269, 538, 863, 1726, 11567, 23134, 37109, 74218, 232147, 464294, 9982321, 19964642]

約数ペア:

[(1, 19964642), (2, 9982321), (43, 464294), (86, 232147), (269, 74218), (538, 37109), (863, 23134), (1726, 11567)]