19993604

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{1223}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 36122688

約数和(自身を除く): 16129084

約数列:

[1, 2, 4, 61, 67, 122, 134, 244, 268, 1223, 2446, 4087, 4892, 8174, 16348, 74603, 81941, 149206, 163882, 298412, 327764, 4998401, 9996802, 19993604]

約数ペア:

[(1, 19993604), (2, 9996802), (4, 4998401), (61, 327764), (67, 298412), (122, 163882), (134, 149206), (244, 81941), (268, 74603), (1223, 16348), (2446, 8174), (4087, 4892)]