15897520

素因数分解:

$2^4\times 5^1\times {\mathrm{198719}}^1$

素因数の和:198732

約数の個数: 20

約数和(自身を含む): 36961920

約数和(自身を除く): 21064400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198719, 397438, 794876, 993595, 1589752, 1987190, 3179504, 3974380, 7948760, 15897520]

約数ペア:

[(1, 15897520), (2, 7948760), (4, 3974380), (5, 3179504), (8, 1987190), (10, 1589752), (16, 993595), (20, 794876), (40, 397438), (80, 198719)]