66798220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{47041}}^1$

素因数の和:47121

約数の個数: 24

約数和(自身を含む): 142255008

約数和(自身を除く): 75456788

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 47041, 94082, 188164, 235205, 470410, 940820, 3339911, 6679822, 13359644, 16699555, 33399110, 66798220]

約数ペア:

[(1, 66798220), (2, 33399110), (4, 16699555), (5, 13359644), (10, 6679822), (20, 3339911), (71, 940820), (142, 470410), (284, 235205), (355, 188164), (710, 94082), (1420, 47041)]