20501024

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:417

約数の個数: 48

約数和(自身を含む): 42311808

約数和(自身を除く): 21810784

約数列:

[1, 2, 4, 8, 16, 32, 43, 47, 86, 94, 172, 188, 317, 344, 376, 634, 688, 752, 1268, 1376, 1504, 2021, 2536, 4042, 5072, 8084, 10144, 13631, 14899, 16168, 27262, 29798, 32336, 54524, 59596, 64672, 109048, 119192, 218096, 238384, 436192, 476768, 640657, 1281314, 2562628, 5125256, 10250512, 20501024]

約数ペア:

[(1, 20501024), (2, 10250512), (4, 5125256), (8, 2562628), (16, 1281314), (32, 640657), (43, 476768), (47, 436192), (86, 238384), (94, 218096), (172, 119192), (188, 109048), (317, 64672), (344, 59596), (376, 54524), (634, 32336), (688, 29798), (752, 27262), (1268, 16168), (1376, 14899), (1504, 13631), (2021, 10144), (2536, 8084), (4042, 5072)]