20018800

素因数分解:

$2^4\times 5^2\times {\mathrm{50047}}^1$

素因数の和:50065

約数の個数: 30

約数和(自身を含む): 48096128

約数和(自身を除く): 28077328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50047, 100094, 200188, 250235, 400376, 500470, 800752, 1000940, 1251175, 2001880, 2502350, 4003760, 5004700, 10009400, 20018800]

約数ペア:

[(1, 20018800), (2, 10009400), (4, 5004700), (5, 4003760), (8, 2502350), (10, 2001880), (16, 1251175), (20, 1000940), (25, 800752), (40, 500470), (50, 400376), (80, 250235), (100, 200188), (200, 100094), (400, 50047)]