20487992

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{21521}}^1$

素因数の和:21551

約数の個数: 32

約数和(自身を含む): 46487520

約数和(自身を除く): 25999528

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 238, 476, 952, 21521, 43042, 86084, 150647, 172168, 301294, 365857, 602588, 731714, 1205176, 1463428, 2560999, 2926856, 5121998, 10243996, 20487992]

約数ペア:

[(1, 20487992), (2, 10243996), (4, 5121998), (7, 2926856), (8, 2560999), (14, 1463428), (17, 1205176), (28, 731714), (34, 602588), (56, 365857), (68, 301294), (119, 172168), (136, 150647), (238, 86084), (476, 43042), (952, 21521)]