78528080

素因数分解:

$2^4\times 5^1\times {\mathrm{981601}}^1$

素因数の和:981614

約数の個数: 20

約数和(自身を含む): 182577972

約数和(自身を除く): 104049892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981601, 1963202, 3926404, 4908005, 7852808, 9816010, 15705616, 19632020, 39264040, 78528080]

約数ペア:

[(1, 78528080), (2, 39264040), (4, 19632020), (5, 15705616), (8, 9816010), (10, 7852808), (16, 4908005), (20, 3926404), (40, 1963202), (80, 981601)]