90155660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{643969}}^1$

素因数の和:643985

約数の個数: 24

約数和(自身を含む): 216373920

約数和(自身を除く): 126218260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 643969, 1287938, 2575876, 3219845, 4507783, 6439690, 9015566, 12879380, 18031132, 22538915, 45077830, 90155660]

約数ペア:

[(1, 90155660), (2, 45077830), (4, 22538915), (5, 18031132), (7, 12879380), (10, 9015566), (14, 6439690), (20, 4507783), (28, 3219845), (35, 2575876), (70, 1287938), (140, 643969)]