257806500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:643

約数の個数: 192

約数和(自身を含む): 879470592

約数和(自身を除く): 621664092

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 43, 50, 60, 70, 75, 84, 86, 100, 105, 125, 129, 140, 150, 172, 175, 210, 215, 250, 258, 300, 301, 350, 375, 420, 430, 500, 516, 525, 571, 602, 645, 700, 750, 860, 875, 903, 1050, 1075, 1142, 1204, 1290, 1500, 1505, 1713, 1750, 1806, 2100, 2150, 2284, 2580, 2625, 2855, 3010, 3225, 3426, 3500, 3612, 3997, 4300, 4515, 5250, 5375, 5710, 6020, 6450, 6852, 7525, 7994, 8565, 9030, 10500, 10750, 11420, 11991, 12900, 14275, 15050, 15988, 16125, 17130, 18060, 19985, 21500, 22575, 23982, 24553, 28550, 30100, 32250, 34260, 37625, 39970, 42825, 45150, 47964, 49106, 57100, 59955, 64500, 71375, 73659, 75250, 79940, 85650, 90300, 98212, 99925, 112875, 119910, 122765, 142750, 147318, 150500, 171300, 171871, 199850, 214125, 225750, 239820, 245530, 285500, 294636, 299775, 343742, 368295, 399700, 428250, 451500, 491060, 499625, 515613, 599550, 613825, 687484, 736590, 856500, 859355, 999250, 1031226, 1199100, 1227650, 1473180, 1498875, 1718710, 1841475, 1998500, 2062452, 2455300, 2578065, 2997750, 3069125, 3437420, 3682950, 4296775, 5156130, 5995500, 6138250, 7365900, 8593550, 9207375, 10312260, 12276500, 12890325, 17187100, 18414750, 21483875, 25780650, 36829500, 42967750, 51561300, 64451625, 85935500, 128903250, 257806500]

約数ペア:

[(1, 257806500), (2, 128903250), (3, 85935500), (4, 64451625), (5, 51561300), (6, 42967750), (7, 36829500), (10, 25780650), (12, 21483875), (14, 18414750), (15, 17187100), (20, 12890325), (21, 12276500), (25, 10312260), (28, 9207375), (30, 8593550), (35, 7365900), (42, 6138250), (43, 5995500), (50, 5156130), (60, 4296775), (70, 3682950), (75, 3437420), (84, 3069125), (86, 2997750), (100, 2578065), (105, 2455300), (125, 2062452), (129, 1998500), (140, 1841475), (150, 1718710), (172, 1498875), (175, 1473180), (210, 1227650), (215, 1199100), (250, 1031226), (258, 999250), (300, 859355), (301, 856500), (350, 736590), (375, 687484), (420, 613825), (430, 599550), (500, 515613), (516, 499625), (525, 491060), (571, 451500), (602, 428250), (645, 399700), (700, 368295), (750, 343742), (860, 299775), (875, 294636), (903, 285500), (1050, 245530), (1075, 239820), (1142, 225750), (1204, 214125), (1290, 199850), (1500, 171871), (1505, 171300), (1713, 150500), (1750, 147318), (1806, 142750), (2100, 122765), (2150, 119910), (2284, 112875), (2580, 99925), (2625, 98212), (2855, 90300), (3010, 85650), (3225, 79940), (3426, 75250), (3500, 73659), (3612, 71375), (3997, 64500), (4300, 59955), (4515, 57100), (5250, 49106), (5375, 47964), (5710, 45150), (6020, 42825), (6450, 39970), (6852, 37625), (7525, 34260), (7994, 32250), (8565, 30100), (9030, 28550), (10500, 24553), (10750, 23982), (11420, 22575), (11991, 21500), (12900, 19985), (14275, 18060), (15050, 17130), (15988, 16125)]