278538625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 396264960

約数和(自身を除く): 117726335

約数列:

[1, 5, 17, 23, 25, 41, 85, 115, 125, 139, 205, 391, 425, 575, 695, 697, 943, 1025, 1955, 2125, 2363, 2875, 3197, 3475, 3485, 4715, 5125, 5699, 9775, 11815, 15985, 16031, 17375, 17425, 23575, 28495, 48875, 54349, 59075, 79925, 80155, 87125, 96883, 117875, 131077, 142475, 271745, 295375, 399625, 400775, 484415, 655385, 712375, 1358725, 2003875, 2228309, 2422075, 3276925, 6793625, 11141545, 12110375, 16384625, 55707725, 278538625]

約数ペア:

[(1, 278538625), (5, 55707725), (17, 16384625), (23, 12110375), (25, 11141545), (41, 6793625), (85, 3276925), (115, 2422075), (125, 2228309), (139, 2003875), (205, 1358725), (391, 712375), (425, 655385), (575, 484415), (695, 400775), (697, 399625), (943, 295375), (1025, 271745), (1955, 142475), (2125, 131077), (2363, 117875), (2875, 96883), (3197, 87125), (3475, 80155), (3485, 79925), (4715, 59075), (5125, 54349), (5699, 48875), (9775, 28495), (11815, 23575), (15985, 17425), (16031, 17375)]