15900880

素因数分解:

$2^4\times 5^1\times {\mathrm{198761}}^1$

素因数の和:198774

約数の個数: 20

約数和(自身を含む): 36969732

約数和(自身を除く): 21068852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198761, 397522, 795044, 993805, 1590088, 1987610, 3180176, 3975220, 7950440, 15900880]

約数ペア:

[(1, 15900880), (2, 7950440), (4, 3975220), (5, 3180176), (8, 1987610), (10, 1590088), (16, 993805), (20, 795044), (40, 397522), (80, 198761)]