8721704080

素因数分解:

$2^4\times 5^1\times {\mathrm{109021301}}^1$

素因数の和:109021314

約数の個数: 20

約数和(自身を含む): 20277962172

約数和(自身を除く): 11556258092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109021301, 218042602, 436085204, 545106505, 872170408, 1090213010, 1744340816, 2180426020, 4360852040, 8721704080]

約数ペア:

[(1, 8721704080), (2, 4360852040), (4, 2180426020), (5, 1744340816), (8, 1090213010), (10, 872170408), (16, 545106505), (20, 436085204), (40, 218042602), (80, 109021301)]