19784480

素因数分解:

$2^5\times 5^1\times {\mathrm{123653}}^1$

素因数の和:123668

約数の個数: 24

約数和(自身を含む): 46741212

約数和(自身を除く): 26956732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123653, 247306, 494612, 618265, 989224, 1236530, 1978448, 2473060, 3956896, 4946120, 9892240, 19784480]

約数ペア:

[(1, 19784480), (2, 9892240), (4, 4946120), (5, 3956896), (8, 2473060), (10, 1978448), (16, 1236530), (20, 989224), (32, 618265), (40, 494612), (80, 247306), (160, 123653)]