19894945

素因数分解:

$5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2549}}^1$

素因数の和:2784

約数の個数: 16

約数和(自身を含む): 27417600

約数和(自身を除く): 7522655

約数列:

[1, 5, 7, 35, 223, 1115, 1561, 2549, 7805, 12745, 17843, 89215, 568427, 2842135, 3978989, 19894945]

約数ペア:

[(1, 19894945), (5, 3978989), (7, 2842135), (35, 568427), (223, 89215), (1115, 17843), (1561, 12745), (2549, 7805)]