19908642

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{255239}}^1$

素因数の和:255257

約数の個数: 16

約数和(自身を含む): 42880320

約数和(自身を除く): 22971678

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 255239, 510478, 765717, 1531434, 3318107, 6636214, 9954321, 19908642]

約数ペア:

[(1, 19908642), (2, 9954321), (3, 6636214), (6, 3318107), (13, 1531434), (26, 765717), (39, 510478), (78, 255239)]