19672880

素因数分解:

$2^4\times 5^1\times {\mathrm{245911}}^1$

素因数の和:245924

約数の個数: 20

約数和(自身を含む): 45739632

約数和(自身を除く): 26066752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245911, 491822, 983644, 1229555, 1967288, 2459110, 3934576, 4918220, 9836440, 19672880]

約数ペア:

[(1, 19672880), (2, 9836440), (4, 4918220), (5, 3934576), (8, 2459110), (10, 1967288), (16, 1229555), (20, 983644), (40, 491822), (80, 245911)]