389968376

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{161947}}^1$

素因数の和:162003

約数の個数: 32

約数和(自身を含む): 855085440

約数和(自身を除く): 465117064

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 161947, 323894, 647788, 1133629, 1295576, 2267258, 4534516, 6963721, 9069032, 13927442, 27854884, 48746047, 55709768, 97492094, 194984188, 389968376]

約数ペア:

[(1, 389968376), (2, 194984188), (4, 97492094), (7, 55709768), (8, 48746047), (14, 27854884), (28, 13927442), (43, 9069032), (56, 6963721), (86, 4534516), (172, 2267258), (301, 1295576), (344, 1133629), (602, 647788), (1204, 323894), (2408, 161947)]