648656

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:650

約数の個数: 20

約数和(自身を含む): 1276704

約数和(自身を除く): 628048

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 571, 1136, 1142, 2284, 4568, 9136, 40541, 81082, 162164, 324328, 648656]

約数ペア:

[(1, 648656), (2, 324328), (4, 162164), (8, 81082), (16, 40541), (71, 9136), (142, 4568), (284, 2284), (568, 1142), (571, 1136)]