278364375

素因数分解:

$3^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 120

約数和(自身を含む): 552648096

約数和(自身を除く): 274283721

約数列:

[1, 3, 5, 9, 15, 17, 25, 41, 45, 51, 71, 75, 85, 123, 125, 153, 205, 213, 225, 255, 355, 369, 375, 425, 615, 625, 639, 697, 765, 1025, 1065, 1125, 1207, 1275, 1775, 1845, 1875, 2091, 2125, 2911, 3075, 3195, 3485, 3621, 3825, 5125, 5325, 5625, 6035, 6273, 6375, 8733, 8875, 9225, 10455, 10625, 10863, 14555, 15375, 15975, 17425, 18105, 19125, 25625, 26199, 26625, 30175, 31365, 31875, 43665, 44375, 46125, 49487, 52275, 54315, 72775, 76875, 79875, 87125, 90525, 95625, 130995, 133125, 148461, 150875, 156825, 218325, 230625, 247435, 261375, 271575, 363875, 399375, 435625, 445383, 452625, 654975, 742305, 754375, 784125, 1091625, 1237175, 1306875, 1357875, 1819375, 2226915, 2263125, 3274875, 3711525, 3920625, 5458125, 6185875, 6789375, 11134575, 16374375, 18557625, 30929375, 55672875, 92788125, 278364375]

約数ペア:

[(1, 278364375), (3, 92788125), (5, 55672875), (9, 30929375), (15, 18557625), (17, 16374375), (25, 11134575), (41, 6789375), (45, 6185875), (51, 5458125), (71, 3920625), (75, 3711525), (85, 3274875), (123, 2263125), (125, 2226915), (153, 1819375), (205, 1357875), (213, 1306875), (225, 1237175), (255, 1091625), (355, 784125), (369, 754375), (375, 742305), (425, 654975), (615, 452625), (625, 445383), (639, 435625), (697, 399375), (765, 363875), (1025, 271575), (1065, 261375), (1125, 247435), (1207, 230625), (1275, 218325), (1775, 156825), (1845, 150875), (1875, 148461), (2091, 133125), (2125, 130995), (2911, 95625), (3075, 90525), (3195, 87125), (3485, 79875), (3621, 76875), (3825, 72775), (5125, 54315), (5325, 52275), (5625, 49487), (6035, 46125), (6273, 44375), (6375, 43665), (8733, 31875), (8875, 31365), (9225, 30175), (10455, 26625), (10625, 26199), (10863, 25625), (14555, 19125), (15375, 18105), (15975, 17425)]