21516512

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 45682560

約数和(自身を除く): 24166048

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 43, 76, 86, 152, 172, 304, 344, 608, 688, 817, 823, 1376, 1634, 1646, 3268, 3292, 6536, 6584, 13072, 13168, 15637, 26144, 26336, 31274, 35389, 62548, 70778, 125096, 141556, 250192, 283112, 500384, 566224, 672391, 1132448, 1344782, 2689564, 5379128, 10758256, 21516512]

約数ペア:

[(1, 21516512), (2, 10758256), (4, 5379128), (8, 2689564), (16, 1344782), (19, 1132448), (32, 672391), (38, 566224), (43, 500384), (76, 283112), (86, 250192), (152, 141556), (172, 125096), (304, 70778), (344, 62548), (608, 35389), (688, 31274), (817, 26336), (823, 26144), (1376, 15637), (1634, 13168), (1646, 13072), (3268, 6584), (3292, 6536)]