19395280

素因数分解:

$2^4\times 5^1\times {\mathrm{242441}}^1$

素因数の和:242454

約数の個数: 20

約数和(自身を含む): 45094212

約数和(自身を除く): 25698932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242441, 484882, 969764, 1212205, 1939528, 2424410, 3879056, 4848820, 9697640, 19395280]

約数ペア:

[(1, 19395280), (2, 9697640), (4, 4848820), (5, 3879056), (8, 2424410), (10, 1939528), (16, 1212205), (20, 969764), (40, 484882), (80, 242441)]