257998720

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:485

約数の個数: 192

約数和(自身を含む): 756982800

約数和(自身を除く): 498984080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 64, 70, 76, 80, 95, 98, 112, 128, 133, 140, 152, 160, 190, 196, 224, 245, 266, 280, 304, 320, 380, 392, 433, 448, 490, 532, 560, 608, 640, 665, 760, 784, 866, 896, 931, 980, 1064, 1120, 1216, 1330, 1520, 1568, 1732, 1862, 1960, 2128, 2165, 2240, 2432, 2660, 3031, 3040, 3136, 3464, 3724, 3920, 4256, 4330, 4480, 4655, 5320, 6062, 6080, 6272, 6928, 7448, 7840, 8227, 8512, 8660, 9310, 10640, 12124, 12160, 13856, 14896, 15155, 15680, 16454, 17024, 17320, 18620, 21217, 21280, 24248, 27712, 29792, 30310, 31360, 32908, 34640, 37240, 41135, 42434, 42560, 48496, 55424, 57589, 59584, 60620, 65816, 69280, 74480, 82270, 84868, 85120, 96992, 106085, 115178, 119168, 121240, 131632, 138560, 148960, 164540, 169736, 193984, 212170, 230356, 242480, 263264, 277120, 287945, 297920, 329080, 339472, 387968, 403123, 424340, 460712, 484960, 526528, 575890, 595840, 658160, 678944, 806246, 848680, 921424, 969920, 1053056, 1151780, 1316320, 1357888, 1612492, 1697360, 1842848, 1939840, 2015615, 2303560, 2632640, 2715776, 3224984, 3394720, 3685696, 4031230, 4607120, 5265280, 6449968, 6789440, 7371392, 8062460, 9214240, 12899936, 13578880, 16124920, 18428480, 25799872, 32249840, 36856960, 51599744, 64499680, 128999360, 257998720]

約数ペア:

[(1, 257998720), (2, 128999360), (4, 64499680), (5, 51599744), (7, 36856960), (8, 32249840), (10, 25799872), (14, 18428480), (16, 16124920), (19, 13578880), (20, 12899936), (28, 9214240), (32, 8062460), (35, 7371392), (38, 6789440), (40, 6449968), (49, 5265280), (56, 4607120), (64, 4031230), (70, 3685696), (76, 3394720), (80, 3224984), (95, 2715776), (98, 2632640), (112, 2303560), (128, 2015615), (133, 1939840), (140, 1842848), (152, 1697360), (160, 1612492), (190, 1357888), (196, 1316320), (224, 1151780), (245, 1053056), (266, 969920), (280, 921424), (304, 848680), (320, 806246), (380, 678944), (392, 658160), (433, 595840), (448, 575890), (490, 526528), (532, 484960), (560, 460712), (608, 424340), (640, 403123), (665, 387968), (760, 339472), (784, 329080), (866, 297920), (896, 287945), (931, 277120), (980, 263264), (1064, 242480), (1120, 230356), (1216, 212170), (1330, 193984), (1520, 169736), (1568, 164540), (1732, 148960), (1862, 138560), (1960, 131632), (2128, 121240), (2165, 119168), (2240, 115178), (2432, 106085), (2660, 96992), (3031, 85120), (3040, 84868), (3136, 82270), (3464, 74480), (3724, 69280), (3920, 65816), (4256, 60620), (4330, 59584), (4480, 57589), (4655, 55424), (5320, 48496), (6062, 42560), (6080, 42434), (6272, 41135), (6928, 37240), (7448, 34640), (7840, 32908), (8227, 31360), (8512, 30310), (8660, 29792), (9310, 27712), (10640, 24248), (12124, 21280), (12160, 21217), (13856, 18620), (14896, 17320), (15155, 17024), (15680, 16454)]