21530656

素因数分解:

$2^5\times 7^1\times {\mathrm{277}}^1\times {\mathrm{347}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 48758976

約数和(自身を除く): 27228320

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 277, 347, 554, 694, 1108, 1388, 1939, 2216, 2429, 2776, 3878, 4432, 4858, 5552, 7756, 8864, 9716, 11104, 15512, 19432, 31024, 38864, 62048, 77728, 96119, 192238, 384476, 672833, 768952, 1345666, 1537904, 2691332, 3075808, 5382664, 10765328, 21530656]

約数ペア:

[(1, 21530656), (2, 10765328), (4, 5382664), (7, 3075808), (8, 2691332), (14, 1537904), (16, 1345666), (28, 768952), (32, 672833), (56, 384476), (112, 192238), (224, 96119), (277, 77728), (347, 62048), (554, 38864), (694, 31024), (1108, 19432), (1388, 15512), (1939, 11104), (2216, 9716), (2429, 8864), (2776, 7756), (3878, 5552), (4432, 4858)]