209580925

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 289822720

約数和(自身を除く): 80241795

約数列:

[1, 5, 19, 25, 31, 43, 95, 155, 215, 331, 475, 589, 775, 817, 1075, 1333, 1655, 2945, 4085, 6289, 6665, 8275, 10261, 14233, 14725, 20425, 25327, 31445, 33325, 51305, 71165, 126635, 157225, 194959, 256525, 270427, 355825, 441223, 633175, 974795, 1352135, 2206115, 4873975, 6760675, 8383237, 11030575, 41916185, 209580925]

約数ペア:

[(1, 209580925), (5, 41916185), (19, 11030575), (25, 8383237), (31, 6760675), (43, 4873975), (95, 2206115), (155, 1352135), (215, 974795), (331, 633175), (475, 441223), (589, 355825), (775, 270427), (817, 256525), (1075, 194959), (1333, 157225), (1655, 126635), (2945, 71165), (4085, 51305), (6289, 33325), (6665, 31445), (8275, 25327), (10261, 20425), (14233, 14725)]