28501025

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 43163904

約数和(自身を除く): 14662879

約数列:

[1, 5, 7, 23, 25, 35, 73, 97, 115, 161, 175, 365, 485, 511, 575, 679, 805, 1679, 1825, 2231, 2425, 2555, 3395, 4025, 7081, 8395, 11155, 11753, 12775, 15617, 16975, 35405, 41975, 49567, 55775, 58765, 78085, 162863, 177025, 247835, 293825, 390425, 814315, 1140041, 1239175, 4071575, 5700205, 28501025]

約数ペア:

[(1, 28501025), (5, 5700205), (7, 4071575), (23, 1239175), (25, 1140041), (35, 814315), (73, 390425), (97, 293825), (115, 247835), (161, 177025), (175, 162863), (365, 78085), (485, 58765), (511, 55775), (575, 49567), (679, 41975), (805, 35405), (1679, 16975), (1825, 15617), (2231, 12775), (2425, 11753), (2555, 11155), (3395, 8395), (4025, 7081)]