256042640

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 200

約数和(自身を含む): 733548288

約数和(自身を除く): 477505648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 43, 49, 56, 62, 70, 80, 86, 98, 112, 124, 140, 155, 172, 196, 215, 217, 245, 248, 280, 301, 310, 343, 344, 392, 430, 434, 490, 496, 560, 602, 620, 686, 688, 784, 860, 868, 980, 1085, 1204, 1240, 1333, 1372, 1505, 1519, 1715, 1720, 1736, 1960, 2107, 2170, 2401, 2408, 2480, 2666, 2744, 3010, 3038, 3430, 3440, 3472, 3920, 4214, 4340, 4802, 4816, 5332, 5488, 6020, 6076, 6665, 6860, 7595, 8428, 8680, 9331, 9604, 10535, 10633, 10664, 12005, 12040, 12152, 13330, 13720, 14749, 15190, 16856, 17360, 18662, 19208, 21070, 21266, 21328, 24010, 24080, 24304, 26660, 27440, 29498, 30380, 33712, 37324, 38416, 42140, 42532, 46655, 48020, 53165, 53320, 58996, 60760, 65317, 73745, 74431, 74648, 84280, 85064, 93310, 96040, 103243, 106330, 106640, 117992, 121520, 130634, 147490, 148862, 149296, 168560, 170128, 186620, 192080, 206486, 212660, 235984, 261268, 294980, 297724, 326585, 372155, 373240, 412972, 425320, 457219, 516215, 522536, 589960, 595448, 653170, 744310, 746480, 825944, 850640, 914438, 1032430, 1045072, 1179920, 1190896, 1306340, 1488620, 1651888, 1828876, 2064860, 2286095, 2612680, 2977240, 3200533, 3657752, 4129720, 4572190, 5225360, 5954480, 6401066, 7315504, 8259440, 9144380, 12802132, 16002665, 18288760, 25604264, 32005330, 36577520, 51208528, 64010660, 128021320, 256042640]

約数ペア:

[(1, 256042640), (2, 128021320), (4, 64010660), (5, 51208528), (7, 36577520), (8, 32005330), (10, 25604264), (14, 18288760), (16, 16002665), (20, 12802132), (28, 9144380), (31, 8259440), (35, 7315504), (40, 6401066), (43, 5954480), (49, 5225360), (56, 4572190), (62, 4129720), (70, 3657752), (80, 3200533), (86, 2977240), (98, 2612680), (112, 2286095), (124, 2064860), (140, 1828876), (155, 1651888), (172, 1488620), (196, 1306340), (215, 1190896), (217, 1179920), (245, 1045072), (248, 1032430), (280, 914438), (301, 850640), (310, 825944), (343, 746480), (344, 744310), (392, 653170), (430, 595448), (434, 589960), (490, 522536), (496, 516215), (560, 457219), (602, 425320), (620, 412972), (686, 373240), (688, 372155), (784, 326585), (860, 297724), (868, 294980), (980, 261268), (1085, 235984), (1204, 212660), (1240, 206486), (1333, 192080), (1372, 186620), (1505, 170128), (1519, 168560), (1715, 149296), (1720, 148862), (1736, 147490), (1960, 130634), (2107, 121520), (2170, 117992), (2401, 106640), (2408, 106330), (2480, 103243), (2666, 96040), (2744, 93310), (3010, 85064), (3038, 84280), (3430, 74648), (3440, 74431), (3472, 73745), (3920, 65317), (4214, 60760), (4340, 58996), (4802, 53320), (4816, 53165), (5332, 48020), (5488, 46655), (6020, 42532), (6076, 42140), (6665, 38416), (6860, 37324), (7595, 33712), (8428, 30380), (8680, 29498), (9331, 27440), (9604, 26660), (10535, 24304), (10633, 24080), (10664, 24010), (12005, 21328), (12040, 21266), (12152, 21070), (13330, 19208), (13720, 18662), (14749, 17360), (15190, 16856)]