80798800

素因数分解:

$2^4\times 5^2\times {\mathrm{201997}}^1$

素因数の和:202015

約数の個数: 30

約数和(自身を含む): 194120078

約数和(自身を除く): 113321278

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201997, 403994, 807988, 1009985, 1615976, 2019970, 3231952, 4039940, 5049925, 8079880, 10099850, 16159760, 20199700, 40399400, 80798800]

約数ペア:

[(1, 80798800), (2, 40399400), (4, 20199700), (5, 16159760), (8, 10099850), (10, 8079880), (16, 5049925), (20, 4039940), (25, 3231952), (40, 2019970), (50, 1615976), (80, 1009985), (100, 807988), (200, 403994), (400, 201997)]