19512820

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7019}}^1$

素因数の和:7167

約数の個数: 24

約数和(自身を含む): 41277600

約数和(自身を除く): 21764780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 7019, 14038, 28076, 35095, 70190, 140380, 975641, 1951282, 3902564, 4878205, 9756410, 19512820]

約数ペア:

[(1, 19512820), (2, 9756410), (4, 4878205), (5, 3902564), (10, 1951282), (20, 975641), (139, 140380), (278, 70190), (556, 35095), (695, 28076), (1390, 14038), (2780, 7019)]