638115904

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{321631}}^1$

素因数の和:321674

約数の個数: 28

約数和(自身を含む): 1307112448

約数和(自身を除く): 668996544

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 496, 992, 1984, 321631, 643262, 1286524, 2573048, 5146096, 9970561, 10292192, 19941122, 20584384, 39882244, 79764488, 159528976, 319057952, 638115904]

約数ペア:

[(1, 638115904), (2, 319057952), (4, 159528976), (8, 79764488), (16, 39882244), (31, 20584384), (32, 19941122), (62, 10292192), (64, 9970561), (124, 5146096), (248, 2573048), (496, 1286524), (992, 643262), (1984, 321631)]