19806717

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 32313600

約数和(自身を除く): 12506883

約数列:

[1, 3, 7, 17, 21, 51, 109, 119, 327, 357, 509, 763, 1527, 1853, 2289, 3563, 5559, 8653, 10689, 12971, 25959, 38913, 55481, 60571, 166443, 181713, 388367, 943177, 1165101, 2829531, 6602239, 19806717]

約数ペア:

[(1, 19806717), (3, 6602239), (7, 2829531), (17, 1165101), (21, 943177), (51, 388367), (109, 181713), (119, 166443), (327, 60571), (357, 55481), (509, 38913), (763, 25959), (1527, 12971), (1853, 10689), (2289, 8653), (3563, 5559)]