201980920

素因数分解:

$2^3\times 5^1\times {\mathrm{5049523}}^1$

素因数の和:5049534

約数の個数: 16

約数和(自身を含む): 454457160

約数和(自身を除く): 252476240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5049523, 10099046, 20198092, 25247615, 40396184, 50495230, 100990460, 201980920]

約数ペア:

[(1, 201980920), (2, 100990460), (4, 50495230), (5, 40396184), (8, 25247615), (10, 20198092), (20, 10099046), (40, 5049523)]