487999880

素因数分解:

$2^3\times 5^1\times {\mathrm{12199997}}^1$

素因数の和:12200008

約数の個数: 16

約数和(自身を含む): 1097999820

約数和(自身を除く): 609999940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 12199997, 24399994, 48799988, 60999985, 97599976, 121999970, 243999940, 487999880]

約数ペア:

[(1, 487999880), (2, 243999940), (4, 121999970), (5, 97599976), (8, 60999985), (10, 48799988), (20, 24399994), (40, 12199997)]