19852880

素因数分解:

$2^4\times 5^1\times {\mathrm{248161}}^1$

素因数の和:248174

約数の個数: 20

約数和(自身を含む): 46158132

約数和(自身を除く): 26305252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248161, 496322, 992644, 1240805, 1985288, 2481610, 3970576, 4963220, 9926440, 19852880]

約数ペア:

[(1, 19852880), (2, 9926440), (4, 4963220), (5, 3970576), (8, 2481610), (10, 1985288), (16, 1240805), (20, 992644), (40, 496322), (80, 248161)]