19470720003

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{687307}}^1$

素因数の和:687407

約数の個数: 32

約数和(自身を含む): 31671152640

約数和(自身を除く): 12200432637

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 1349, 1491, 4047, 9443, 28329, 687307, 2061921, 4811149, 13058833, 14433447, 39176499, 48798797, 91411831, 146396391, 274235493, 341591579, 927177143, 1024774737, 2781531429, 6490240001, 19470720003]

約数ペア:

[(1, 19470720003), (3, 6490240001), (7, 2781531429), (19, 1024774737), (21, 927177143), (57, 341591579), (71, 274235493), (133, 146396391), (213, 91411831), (399, 48798797), (497, 39176499), (1349, 14433447), (1491, 13058833), (4047, 4811149), (9443, 2061921), (28329, 687307)]