19977278

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{1601}}^1$

素因数の和:1987

約数の個数: 16

約数和(自身を含む): 31834944

約数和(自身を除く): 11857666

約数列:

[1, 2, 17, 34, 367, 734, 1601, 3202, 6239, 12478, 27217, 54434, 587567, 1175134, 9988639, 19977278]

約数ペア:

[(1, 19977278), (2, 9988639), (17, 1175134), (34, 587567), (367, 54434), (734, 27217), (1601, 12478), (3202, 6239)]