80855920

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2251}}^1$

素因数の和:2713

約数の個数: 40

約数和(自身を含む): 188492400

約数和(自身を除く): 107636480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 898, 1796, 2245, 2251, 3592, 4490, 4502, 7184, 8980, 9004, 11255, 17960, 18008, 22510, 35920, 36016, 45020, 90040, 180080, 1010699, 2021398, 4042796, 5053495, 8085592, 10106990, 16171184, 20213980, 40427960, 80855920]

約数ペア:

[(1, 80855920), (2, 40427960), (4, 20213980), (5, 16171184), (8, 10106990), (10, 8085592), (16, 5053495), (20, 4042796), (40, 2021398), (80, 1010699), (449, 180080), (898, 90040), (1796, 45020), (2245, 36016), (2251, 35920), (3592, 22510), (4490, 18008), (4502, 17960), (7184, 11255), (8980, 9004)]