256385396

素因数分解:

$2^2\times {\mathrm{157}}^1\times {\mathrm{631}}^1\times {\mathrm{647}}^1$

素因数の和:1439

約数の個数: 24

約数和(自身を含む): 452946816

約数和(自身を除く): 196561420

約数列:

[1, 2, 4, 157, 314, 628, 631, 647, 1262, 1294, 2524, 2588, 99067, 101579, 198134, 203158, 396268, 406316, 408257, 816514, 1633028, 64096349, 128192698, 256385396]

約数ペア:

[(1, 256385396), (2, 128192698), (4, 64096349), (157, 1633028), (314, 816514), (628, 408257), (631, 406316), (647, 396268), (1262, 203158), (1294, 198134), (2524, 101579), (2588, 99067)]