18859959

素因数分解:

$3^6\times {\mathrm{41}}^1\times {\mathrm{631}}^1$

素因数の和:690

約数の個数: 28

約数和(自身を含む): 29012592

約数和(自身を除く): 10152633

約数列:

[1, 3, 9, 27, 41, 81, 123, 243, 369, 631, 729, 1107, 1893, 3321, 5679, 9963, 17037, 25871, 29889, 51111, 77613, 153333, 232839, 459999, 698517, 2095551, 6286653, 18859959]

約数ペア:

[(1, 18859959), (3, 6286653), (9, 2095551), (27, 698517), (41, 459999), (81, 232839), (123, 153333), (243, 77613), (369, 51111), (631, 29889), (729, 25871), (1107, 17037), (1893, 9963), (3321, 5679)]