128425780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{917327}}^1$

素因数の和:917343

約数の個数: 24

約数和(自身を含む): 308222208

約数和(自身を除く): 179796428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 917327, 1834654, 3669308, 4586635, 6421289, 9173270, 12842578, 18346540, 25685156, 32106445, 64212890, 128425780]

約数ペア:

[(1, 128425780), (2, 64212890), (4, 32106445), (5, 25685156), (7, 18346540), (10, 12842578), (14, 9173270), (20, 6421289), (28, 4586635), (35, 3669308), (70, 1834654), (140, 917327)]