2017788400

素因数分解:

$2^4\times 5^2\times {\mathrm{1979}}^1\times {\mathrm{2549}}^1$

素因数の和:4546

約数の個数: 60

約数和(自身を含む): 4852089000

約数和(自身を除く): 2834300600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1979, 2549, 3958, 5098, 7916, 9895, 10196, 12745, 15832, 19790, 20392, 25490, 31664, 39580, 40784, 49475, 50980, 63725, 79160, 98950, 101960, 127450, 158320, 197900, 203920, 254900, 395800, 509800, 791600, 1019600, 5044471, 10088942, 20177884, 25222355, 40355768, 50444710, 80711536, 100889420, 126111775, 201778840, 252223550, 403557680, 504447100, 1008894200, 2017788400]

約数ペア:

[(1, 2017788400), (2, 1008894200), (4, 504447100), (5, 403557680), (8, 252223550), (10, 201778840), (16, 126111775), (20, 100889420), (25, 80711536), (40, 50444710), (50, 40355768), (80, 25222355), (100, 20177884), (200, 10088942), (400, 5044471), (1979, 1019600), (2549, 791600), (3958, 509800), (5098, 395800), (7916, 254900), (9895, 203920), (10196, 197900), (12745, 158320), (15832, 127450), (19790, 101960), (20392, 98950), (25490, 79160), (31664, 63725), (39580, 50980), (40784, 49475)]