821248968080

素因数分解:

$2^4\times 5^1\times {\mathrm{10265612101}}^1$

素因数の和:10265612114

約数の個数: 20

約数和(自身を含む): 1909403850972

約数和(自身を除く): 1088154882892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10265612101, 20531224202, 41062448404, 51328060505, 82124896808, 102656121010, 164249793616, 205312242020, 410624484040, 821248968080]

約数ペア:

[(1, 821248968080), (2, 410624484040), (4, 205312242020), (5, 164249793616), (8, 102656121010), (10, 82124896808), (16, 51328060505), (20, 41062448404), (40, 20531224202), (80, 10265612101)]