129474640

素因数分解:

$2^4\times 5^1\times {\mathrm{1618433}}^1$

素因数の和:1618446

約数の個数: 20

約数和(自身を含む): 301028724

約数和(自身を除く): 171554084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1618433, 3236866, 6473732, 8092165, 12947464, 16184330, 25894928, 32368660, 64737320, 129474640]

約数ペア:

[(1, 129474640), (2, 64737320), (4, 32368660), (5, 25894928), (8, 16184330), (10, 12947464), (16, 8092165), (20, 6473732), (40, 3236866), (80, 1618433)]