19963880

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1481}}^1$

素因数の和:1829

約数の個数: 32

約数和(自身を含む): 45082440

約数和(自身を除く): 25118560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1481, 1685, 2696, 2962, 3370, 5924, 6740, 7405, 11848, 13480, 14810, 29620, 59240, 499097, 998194, 1996388, 2495485, 3992776, 4990970, 9981940, 19963880]

約数ペア:

[(1, 19963880), (2, 9981940), (4, 4990970), (5, 3992776), (8, 2495485), (10, 1996388), (20, 998194), (40, 499097), (337, 59240), (674, 29620), (1348, 14810), (1481, 13480), (1685, 11848), (2696, 7405), (2962, 6740), (3370, 5924)]