68708920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{245389}}^1$

素因数の和:245407

約数の個数: 32

約数和(自身を含む): 176680800

約数和(自身を除く): 107971880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 245389, 490778, 981556, 1226945, 1717723, 1963112, 2453890, 3435446, 4907780, 6870892, 8588615, 9815560, 13741784, 17177230, 34354460, 68708920]

約数ペア:

[(1, 68708920), (2, 34354460), (4, 17177230), (5, 13741784), (7, 9815560), (8, 8588615), (10, 6870892), (14, 4907780), (20, 3435446), (28, 2453890), (35, 1963112), (40, 1717723), (56, 1226945), (70, 981556), (140, 490778), (280, 245389)]