19605680

素因数分解:

$2^4\times 5^1\times {\mathrm{245071}}^1$

素因数の和:245084

約数の個数: 20

約数和(自身を含む): 45583392

約数和(自身を除く): 25977712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245071, 490142, 980284, 1225355, 1960568, 2450710, 3921136, 4901420, 9802840, 19605680]

約数ペア:

[(1, 19605680), (2, 9802840), (4, 4901420), (5, 3921136), (8, 2450710), (10, 1960568), (16, 1225355), (20, 980284), (40, 490142), (80, 245071)]