19805379

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 10054461

約数列:

[1, 3, 11, 33, 71, 79, 107, 213, 237, 321, 781, 869, 1177, 2343, 2607, 3531, 5609, 7597, 8453, 16827, 22791, 25359, 61699, 83567, 92983, 185097, 250701, 278949, 600163, 1800489, 6601793, 19805379]

約数ペア:

[(1, 19805379), (3, 6601793), (11, 1800489), (33, 600163), (71, 278949), (79, 250701), (107, 185097), (213, 92983), (237, 83567), (321, 61699), (781, 25359), (869, 22791), (1177, 16827), (2343, 8453), (2607, 7597), (3531, 5609)]