19237840

素因数分解:

$2^4\times 5^1\times {\mathrm{240473}}^1$

素因数の和:240486

約数の個数: 20

約数和(自身を含む): 44728164

約数和(自身を除く): 25490324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 240473, 480946, 961892, 1202365, 1923784, 2404730, 3847568, 4809460, 9618920, 19237840]

約数ペア:

[(1, 19237840), (2, 9618920), (4, 4809460), (5, 3847568), (8, 2404730), (10, 1923784), (16, 1202365), (20, 961892), (40, 480946), (80, 240473)]