21438970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43753}}^1$

素因数の和:43774

約数の個数: 24

約数和(自身を含む): 44891604

約数和(自身を除く): 23452634

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43753, 87506, 218765, 306271, 437530, 612542, 1531355, 2143897, 3062710, 4287794, 10719485, 21438970]

約数ペア:

[(1, 21438970), (2, 10719485), (5, 4287794), (7, 3062710), (10, 2143897), (14, 1531355), (35, 612542), (49, 437530), (70, 306271), (98, 218765), (245, 87506), (490, 43753)]