19989213

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{1783}}^1$

素因数の和:1924

約数の個数: 16

約数和(自身を含む): 27659136

約数和(自身を除く): 7669923

約数列:

[1, 3, 37, 101, 111, 303, 1783, 3737, 5349, 11211, 65971, 180083, 197913, 540249, 6663071, 19989213]

約数ペア:

[(1, 19989213), (3, 6663071), (37, 540249), (101, 197913), (111, 180083), (303, 65971), (1783, 11211), (3737, 5349)]