19997864

素因数分解:

$2^3\times {\mathrm{197}}^1\times {\mathrm{12689}}^1$

素因数の和:12892

約数の個数: 16

約数和(自身を含む): 37689300

約数和(自身を除く): 17691436

約数列:

[1, 2, 4, 8, 197, 394, 788, 1576, 12689, 25378, 50756, 101512, 2499733, 4999466, 9998932, 19997864]

約数ペア:

[(1, 19997864), (2, 9998932), (4, 4999466), (8, 2499733), (197, 101512), (394, 50756), (788, 25378), (1576, 12689)]