20434840

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2647}}^1$

素因数の和:2851

約数の個数: 32

約数和(自身を含む): 46234080

約数和(自身を除く): 25799240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2647, 3860, 5294, 7720, 10588, 13235, 21176, 26470, 52940, 105880, 510871, 1021742, 2043484, 2554355, 4086968, 5108710, 10217420, 20434840]

約数ペア:

[(1, 20434840), (2, 10217420), (4, 5108710), (5, 4086968), (8, 2554355), (10, 2043484), (20, 1021742), (40, 510871), (193, 105880), (386, 52940), (772, 26470), (965, 21176), (1544, 13235), (1930, 10588), (2647, 7720), (3860, 5294)]