215615515

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 281413440

約数和(自身を除く): 65797925

約数列:

[1, 5, 19, 41, 95, 197, 205, 281, 779, 985, 1405, 3743, 3895, 5339, 8077, 11521, 18715, 26695, 40385, 55357, 57605, 153463, 218899, 276785, 767315, 1051783, 1094495, 2269637, 5258915, 11348185, 43123103, 215615515]

約数ペア:

[(1, 215615515), (5, 43123103), (19, 11348185), (41, 5258915), (95, 2269637), (197, 1094495), (205, 1051783), (281, 767315), (779, 276785), (985, 218899), (1405, 153463), (3743, 57605), (3895, 55357), (5339, 40385), (8077, 26695), (11521, 18715)]