21275778884

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{433}}^1\times {\mathrm{646523}}^1$

素因数の和:646979

約数の個数: 24

約数和(自身を含む): 39282798240

約数和(自身を除く): 18007019356

約数列:

[1, 2, 4, 19, 38, 76, 433, 866, 1732, 8227, 16454, 32908, 646523, 1293046, 2586092, 12283937, 24567874, 49135748, 279944459, 559888918, 1119777836, 5318944721, 10637889442, 21275778884]

約数ペア:

[(1, 21275778884), (2, 10637889442), (4, 5318944721), (19, 1119777836), (38, 559888918), (76, 279944459), (433, 49135748), (866, 24567874), (1732, 12283937), (8227, 2586092), (16454, 1293046), (32908, 646523)]