19660029520

素因数分解:

$2^4\times 5^1\times {\mathrm{245750369}}^1$

素因数の和:245750382

約数の個数: 20

約数和(自身を含む): 45709568820

約数和(自身を除く): 26049539300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245750369, 491500738, 983001476, 1228751845, 1966002952, 2457503690, 3932005904, 4915007380, 9830014760, 19660029520]

約数ペア:

[(1, 19660029520), (2, 9830014760), (4, 4915007380), (5, 3932005904), (8, 2457503690), (10, 1966002952), (16, 1228751845), (20, 983001476), (40, 491500738), (80, 245750369)]