80403920

素因数分解:

$2^4\times 5^1\times {\mathrm{1005049}}^1$

素因数の和:1005062

約数の個数: 20

約数和(自身を含む): 186939300

約数和(自身を除く): 106535380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1005049, 2010098, 4020196, 5025245, 8040392, 10050490, 16080784, 20100980, 40201960, 80403920]

約数ペア:

[(1, 80403920), (2, 40201960), (4, 20100980), (5, 16080784), (8, 10050490), (10, 8040392), (16, 5025245), (20, 4020196), (40, 2010098), (80, 1005049)]