20178390988

素因数分解:

$2^2\times 7^1\times {\mathrm{720656821}}^1$

素因数の和:720656832

約数の個数: 12

約数和(自身を含む): 40356782032

約数和(自身を除く): 20178391044

約数列:

[1, 2, 4, 7, 14, 28, 720656821, 1441313642, 2882627284, 5044597747, 10089195494, 20178390988]

約数ペア:

[(1, 20178390988), (2, 10089195494), (4, 5044597747), (7, 2882627284), (14, 1441313642), (28, 720656821)]