19417880

素因数分解:

$2^3\times 5^1\times {\mathrm{485447}}^1$

素因数の和:485458

約数の個数: 16

約数和(自身を含む): 43690320

約数和(自身を除く): 24272440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 485447, 970894, 1941788, 2427235, 3883576, 4854470, 9708940, 19417880]

約数ペア:

[(1, 19417880), (2, 9708940), (4, 4854470), (5, 3883576), (8, 2427235), (10, 1941788), (20, 970894), (40, 485447)]