78646540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{561761}}^1$

素因数の和:561777

約数の個数: 24

約数和(自身を含む): 188752032

約数和(自身を除く): 110105492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 561761, 1123522, 2247044, 2808805, 3932327, 5617610, 7864654, 11235220, 15729308, 19661635, 39323270, 78646540]

約数ペア:

[(1, 78646540), (2, 39323270), (4, 19661635), (5, 15729308), (7, 11235220), (10, 7864654), (14, 5617610), (20, 3932327), (28, 2808805), (35, 2247044), (70, 1123522), (140, 561761)]