18722930

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 34570800

約数和(自身を除く): 15847870

約数列:

[1, 2, 5, 10, 89, 109, 178, 193, 218, 386, 445, 545, 890, 965, 1090, 1930, 9701, 17177, 19402, 21037, 34354, 42074, 48505, 85885, 97010, 105185, 171770, 210370, 1872293, 3744586, 9361465, 18722930]

約数ペア:

[(1, 18722930), (2, 9361465), (5, 3744586), (10, 1872293), (89, 210370), (109, 171770), (178, 105185), (193, 97010), (218, 85885), (386, 48505), (445, 42074), (545, 34354), (890, 21037), (965, 19402), (1090, 17177), (1930, 9701)]