156640820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1118863}}^1$

素因数の和:1118879

約数の個数: 24

約数和(自身を含む): 375938304

約数和(自身を除く): 219297484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1118863, 2237726, 4475452, 5594315, 7832041, 11188630, 15664082, 22377260, 31328164, 39160205, 78320410, 156640820]

約数ペア:

[(1, 156640820), (2, 78320410), (4, 39160205), (5, 31328164), (7, 22377260), (10, 15664082), (14, 11188630), (20, 7832041), (28, 5594315), (35, 4475452), (70, 2237726), (140, 1118863)]