820199200

素因数分解:

$2^5\times 5^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:387

約数の個数: 144

約数和(自身を含む): 2076804576

約数和(自身を除く): 1256605376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 80, 86, 100, 113, 160, 172, 200, 211, 215, 226, 344, 400, 422, 430, 452, 565, 688, 800, 844, 860, 904, 1055, 1075, 1130, 1376, 1688, 1720, 1808, 2110, 2150, 2260, 2825, 3376, 3440, 3616, 4220, 4300, 4520, 4859, 5275, 5650, 6752, 6880, 8440, 8600, 9040, 9073, 9718, 10550, 11300, 16880, 17200, 18080, 18146, 19436, 21100, 22600, 23843, 24295, 33760, 34400, 36292, 38872, 42200, 45200, 45365, 47686, 48590, 72584, 77744, 84400, 90400, 90730, 95372, 97180, 119215, 121475, 145168, 155488, 168800, 181460, 190744, 194360, 226825, 238430, 242950, 290336, 362920, 381488, 388720, 453650, 476860, 485900, 596075, 725840, 762976, 777440, 907300, 953720, 971800, 1025249, 1192150, 1451680, 1814600, 1907440, 1943600, 2050498, 2384300, 3629200, 3814880, 3887200, 4100996, 4768600, 5126245, 7258400, 8201992, 9537200, 10252490, 16403984, 19074400, 20504980, 25631225, 32807968, 41009960, 51262450, 82019920, 102524900, 164039840, 205049800, 410099600, 820199200]

約数ペア:

[(1, 820199200), (2, 410099600), (4, 205049800), (5, 164039840), (8, 102524900), (10, 82019920), (16, 51262450), (20, 41009960), (25, 32807968), (32, 25631225), (40, 20504980), (43, 19074400), (50, 16403984), (80, 10252490), (86, 9537200), (100, 8201992), (113, 7258400), (160, 5126245), (172, 4768600), (200, 4100996), (211, 3887200), (215, 3814880), (226, 3629200), (344, 2384300), (400, 2050498), (422, 1943600), (430, 1907440), (452, 1814600), (565, 1451680), (688, 1192150), (800, 1025249), (844, 971800), (860, 953720), (904, 907300), (1055, 777440), (1075, 762976), (1130, 725840), (1376, 596075), (1688, 485900), (1720, 476860), (1808, 453650), (2110, 388720), (2150, 381488), (2260, 362920), (2825, 290336), (3376, 242950), (3440, 238430), (3616, 226825), (4220, 194360), (4300, 190744), (4520, 181460), (4859, 168800), (5275, 155488), (5650, 145168), (6752, 121475), (6880, 119215), (8440, 97180), (8600, 95372), (9040, 90730), (9073, 90400), (9718, 84400), (10550, 77744), (11300, 72584), (16880, 48590), (17200, 47686), (18080, 45365), (18146, 45200), (19436, 42200), (21100, 38872), (22600, 36292), (23843, 34400), (24295, 33760)]