289980920

素因数分解:

$2^3\times 5^1\times {\mathrm{7249523}}^1$

素因数の和:7249534

約数の個数: 16

約数和(自身を含む): 652457160

約数和(自身を除く): 362476240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7249523, 14499046, 28998092, 36247615, 57996184, 72495230, 144990460, 289980920]

約数ペア:

[(1, 289980920), (2, 144990460), (4, 72495230), (5, 57996184), (8, 36247615), (10, 28998092), (20, 14499046), (40, 7249523)]