21568256

素因数分解:

$2^8\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:676

約数の個数: 36

約数和(自身を含む): 43390032

約数和(自身を除く): 21821776

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 173, 256, 346, 487, 692, 974, 1384, 1948, 2768, 3896, 5536, 7792, 11072, 15584, 22144, 31168, 44288, 62336, 84251, 124672, 168502, 337004, 674008, 1348016, 2696032, 5392064, 10784128, 21568256]

約数ペア:

[(1, 21568256), (2, 10784128), (4, 5392064), (8, 2696032), (16, 1348016), (32, 674008), (64, 337004), (128, 168502), (173, 124672), (256, 84251), (346, 62336), (487, 44288), (692, 31168), (974, 22144), (1384, 15584), (1948, 11072), (2768, 7792), (3896, 5536)]