19653640

素因数分解:

$2^3\times 5^1\times {\mathrm{491341}}^1$

素因数の和:491352

約数の個数: 16

約数和(自身を含む): 44220780

約数和(自身を除く): 24567140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491341, 982682, 1965364, 2456705, 3930728, 4913410, 9826820, 19653640]

約数ペア:

[(1, 19653640), (2, 9826820), (4, 4913410), (5, 3930728), (8, 2456705), (10, 1965364), (20, 982682), (40, 491341)]