20697104

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:567

約数の個数: 40

約数和(自身を含む): 41738400

約数和(自身を除く): 21041296

約数列:

[1, 2, 4, 8, 16, 43, 67, 86, 134, 172, 268, 344, 449, 536, 688, 898, 1072, 1796, 2881, 3592, 5762, 7184, 11524, 19307, 23048, 30083, 38614, 46096, 60166, 77228, 120332, 154456, 240664, 308912, 481328, 1293569, 2587138, 5174276, 10348552, 20697104]

約数ペア:

[(1, 20697104), (2, 10348552), (4, 5174276), (8, 2587138), (16, 1293569), (43, 481328), (67, 308912), (86, 240664), (134, 154456), (172, 120332), (268, 77228), (344, 60166), (449, 46096), (536, 38614), (688, 30083), (898, 23048), (1072, 19307), (1796, 11524), (2881, 7184), (3592, 5762)]