19739120

素因数分解:

$2^4\times 5^1\times {\mathrm{246739}}^1$

素因数の和:246752

約数の個数: 20

約数和(自身を含む): 45893640

約数和(自身を除く): 26154520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246739, 493478, 986956, 1233695, 1973912, 2467390, 3947824, 4934780, 9869560, 19739120]

約数ペア:

[(1, 19739120), (2, 9869560), (4, 4934780), (5, 3947824), (8, 2467390), (10, 1973912), (16, 1233695), (20, 986956), (40, 493478), (80, 246739)]