19901882

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9941}}^1$

素因数の和:9974

約数の個数: 32

約数和(自身を含む): 40086144

約数和(自身を除く): 20184262

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 143, 154, 182, 286, 1001, 2002, 9941, 19882, 69587, 109351, 129233, 139174, 218702, 258466, 765457, 904631, 1421563, 1530914, 1809262, 2843126, 9950941, 19901882]

約数ペア:

[(1, 19901882), (2, 9950941), (7, 2843126), (11, 1809262), (13, 1530914), (14, 1421563), (22, 904631), (26, 765457), (77, 258466), (91, 218702), (143, 139174), (154, 129233), (182, 109351), (286, 69587), (1001, 19882), (2002, 9941)]