19993995

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{63473}}^1$

素因数の和:63491

約数の個数: 24

約数和(自身を含む): 39607776

約数和(自身を除く): 19613781

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 63473, 190419, 317365, 444311, 571257, 952095, 1332933, 2221555, 2856285, 3998799, 6664665, 19993995]

約数ペア:

[(1, 19993995), (3, 6664665), (5, 3998799), (7, 2856285), (9, 2221555), (15, 1332933), (21, 952095), (35, 571257), (45, 444311), (63, 317365), (105, 190419), (315, 63473)]