21134440

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1867}}^1$

素因数の和:2161

約数の個数: 32

約数和(自身を含む): 47746080

約数和(自身を除く): 26611640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1867, 2264, 2830, 3734, 5660, 7468, 9335, 11320, 14936, 18670, 37340, 74680, 528361, 1056722, 2113444, 2641805, 4226888, 5283610, 10567220, 21134440]

約数ペア:

[(1, 21134440), (2, 10567220), (4, 5283610), (5, 4226888), (8, 2641805), (10, 2113444), (20, 1056722), (40, 528361), (283, 74680), (566, 37340), (1132, 18670), (1415, 14936), (1867, 11320), (2264, 9335), (2830, 7468), (3734, 5660)]