21338840

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1583}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 48185280

約数和(自身を除く): 26846440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1583, 1685, 2696, 3166, 3370, 6332, 6740, 7915, 12664, 13480, 15830, 31660, 63320, 533471, 1066942, 2133884, 2667355, 4267768, 5334710, 10669420, 21338840]

約数ペア:

[(1, 21338840), (2, 10669420), (4, 5334710), (5, 4267768), (8, 2667355), (10, 2133884), (20, 1066942), (40, 533471), (337, 63320), (674, 31660), (1348, 15830), (1583, 13480), (1685, 12664), (2696, 7915), (3166, 6740), (3370, 6332)]