129807760

素因数分解:

$2^4\times 5^1\times {\mathrm{1622597}}^1$

素因数の和:1622610

約数の個数: 20

約数和(自身を含む): 301803228

約数和(自身を除く): 171995468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1622597, 3245194, 6490388, 8112985, 12980776, 16225970, 25961552, 32451940, 64903880, 129807760]

約数ペア:

[(1, 129807760), (2, 64903880), (4, 32451940), (5, 25961552), (8, 16225970), (10, 12980776), (16, 8112985), (20, 6490388), (40, 3245194), (80, 1622597)]