209900240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2459}}^1$

素因数の和:2580

約数の個数: 80

約数和(自身を含む): 538090560

約数和(自身を除く): 328190320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 97, 110, 176, 194, 220, 388, 440, 485, 776, 880, 970, 1067, 1552, 1940, 2134, 2459, 3880, 4268, 4918, 5335, 7760, 8536, 9836, 10670, 12295, 17072, 19672, 21340, 24590, 27049, 39344, 42680, 49180, 54098, 85360, 98360, 108196, 135245, 196720, 216392, 238523, 270490, 432784, 477046, 540980, 954092, 1081960, 1192615, 1908184, 2163920, 2385230, 2623753, 3816368, 4770460, 5247506, 9540920, 10495012, 13118765, 19081840, 20990024, 26237530, 41980048, 52475060, 104950120, 209900240]

約数ペア:

[(1, 209900240), (2, 104950120), (4, 52475060), (5, 41980048), (8, 26237530), (10, 20990024), (11, 19081840), (16, 13118765), (20, 10495012), (22, 9540920), (40, 5247506), (44, 4770460), (55, 3816368), (80, 2623753), (88, 2385230), (97, 2163920), (110, 1908184), (176, 1192615), (194, 1081960), (220, 954092), (388, 540980), (440, 477046), (485, 432784), (776, 270490), (880, 238523), (970, 216392), (1067, 196720), (1552, 135245), (1940, 108196), (2134, 98360), (2459, 85360), (3880, 54098), (4268, 49180), (4918, 42680), (5335, 39344), (7760, 27049), (8536, 24590), (9836, 21340), (10670, 19672), (12295, 17072)]