20927839975

素因数分解:

$5^2\times 7^2\times {\mathrm{199}}^1\times {\mathrm{293}}^2$

素因数の和:809

約数の個数: 54

約数和(自身を含む): 30442936200

約数和(自身を除く): 9515096225

約数列:

[1, 5, 7, 25, 35, 49, 175, 199, 245, 293, 995, 1225, 1393, 1465, 2051, 4975, 6965, 7325, 9751, 10255, 14357, 34825, 48755, 51275, 58307, 71785, 85849, 243775, 291535, 358925, 408149, 429245, 600943, 1457675, 2040745, 2146225, 2857043, 3004715, 4206601, 10203725, 14285215, 15023575, 17083951, 21033005, 71426075, 85419755, 105165025, 119587657, 427098775, 597938285, 837113599, 2989691425, 4185567995, 20927839975]

約数ペア:

[(1, 20927839975), (5, 4185567995), (7, 2989691425), (25, 837113599), (35, 597938285), (49, 427098775), (175, 119587657), (199, 105165025), (245, 85419755), (293, 71426075), (995, 21033005), (1225, 17083951), (1393, 15023575), (1465, 14285215), (2051, 10203725), (4975, 4206601), (6965, 3004715), (7325, 2857043), (9751, 2146225), (10255, 2040745), (14357, 1457675), (34825, 600943), (48755, 429245), (51275, 408149), (58307, 358925), (71785, 291535), (85849, 243775)]