19975478

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1\times {\mathrm{647}}^1$

素因数の和:1051

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 10817482

約数列:

[1, 2, 43, 86, 359, 647, 718, 1294, 15437, 27821, 30874, 55642, 232273, 464546, 9987739, 19975478]

約数ペア:

[(1, 19975478), (2, 9987739), (43, 464546), (86, 232273), (359, 55642), (647, 30874), (718, 27821), (1294, 15437)]