28681000

素因数分解:

$2^3\times 5^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:116

約数の個数: 128

約数和(自身を含む): 74131200

約数和(自身を除く): 45450200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 29, 40, 43, 46, 50, 58, 86, 92, 100, 115, 116, 125, 145, 172, 184, 200, 215, 230, 232, 250, 290, 344, 430, 460, 500, 575, 580, 667, 725, 860, 920, 989, 1000, 1075, 1150, 1160, 1247, 1334, 1450, 1720, 1978, 2150, 2300, 2494, 2668, 2875, 2900, 3335, 3625, 3956, 4300, 4600, 4945, 4988, 5336, 5375, 5750, 5800, 6235, 6670, 7250, 7912, 8600, 9890, 9976, 10750, 11500, 12470, 13340, 14500, 16675, 19780, 21500, 23000, 24725, 24940, 26680, 28681, 29000, 31175, 33350, 39560, 43000, 49450, 49880, 57362, 62350, 66700, 83375, 98900, 114724, 123625, 124700, 133400, 143405, 155875, 166750, 197800, 229448, 247250, 249400, 286810, 311750, 333500, 494500, 573620, 623500, 667000, 717025, 989000, 1147240, 1247000, 1434050, 2868100, 3585125, 5736200, 7170250, 14340500, 28681000]

約数ペア:

[(1, 28681000), (2, 14340500), (4, 7170250), (5, 5736200), (8, 3585125), (10, 2868100), (20, 1434050), (23, 1247000), (25, 1147240), (29, 989000), (40, 717025), (43, 667000), (46, 623500), (50, 573620), (58, 494500), (86, 333500), (92, 311750), (100, 286810), (115, 249400), (116, 247250), (125, 229448), (145, 197800), (172, 166750), (184, 155875), (200, 143405), (215, 133400), (230, 124700), (232, 123625), (250, 114724), (290, 98900), (344, 83375), (430, 66700), (460, 62350), (500, 57362), (575, 49880), (580, 49450), (667, 43000), (725, 39560), (860, 33350), (920, 31175), (989, 29000), (1000, 28681), (1075, 26680), (1150, 24940), (1160, 24725), (1247, 23000), (1334, 21500), (1450, 19780), (1720, 16675), (1978, 14500), (2150, 13340), (2300, 12470), (2494, 11500), (2668, 10750), (2875, 9976), (2900, 9890), (3335, 8600), (3625, 7912), (3956, 7250), (4300, 6670), (4600, 6235), (4945, 5800), (4988, 5750), (5336, 5375)]