257500880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:234

約数の個数: 240

約数和(自身を含む): 778950144

約数和(自身を除く): 521449264

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 35, 40, 49, 52, 56, 62, 65, 70, 80, 91, 98, 104, 112, 124, 130, 140, 155, 163, 182, 196, 208, 217, 245, 248, 260, 280, 310, 326, 364, 392, 403, 434, 455, 490, 496, 520, 560, 620, 637, 652, 728, 784, 806, 815, 868, 910, 980, 1040, 1085, 1141, 1240, 1274, 1304, 1456, 1519, 1612, 1630, 1736, 1820, 1960, 2015, 2119, 2170, 2282, 2480, 2548, 2608, 2821, 3038, 3185, 3224, 3260, 3472, 3640, 3920, 4030, 4238, 4340, 4564, 5053, 5096, 5642, 5705, 6076, 6370, 6448, 6520, 7280, 7595, 7987, 8060, 8476, 8680, 9128, 10106, 10192, 10595, 11284, 11410, 12152, 12740, 13040, 14105, 14833, 15190, 15974, 16120, 16952, 17360, 18256, 19747, 20212, 21190, 22568, 22820, 24304, 25265, 25480, 28210, 29666, 30380, 31948, 32240, 33904, 35371, 39494, 39935, 40424, 42380, 45136, 45640, 50530, 50960, 56420, 59332, 60760, 63896, 65689, 70742, 74165, 78988, 79870, 80848, 84760, 91280, 98735, 101060, 103831, 112840, 118664, 121520, 127792, 131378, 141484, 148330, 157976, 159740, 169520, 176855, 197470, 202120, 207662, 225680, 237328, 247597, 262756, 282968, 296660, 315952, 319480, 328445, 353710, 394940, 404240, 415324, 459823, 495194, 519155, 525512, 565936, 593320, 638960, 656890, 707420, 789880, 830648, 919646, 990388, 1038310, 1051024, 1186640, 1237985, 1313780, 1414840, 1579760, 1661296, 1839292, 1980776, 2076620, 2299115, 2475970, 2627560, 2829680, 3218761, 3678584, 3961552, 4153240, 4598230, 4951940, 5255120, 6437522, 7357168, 8306480, 9196460, 9903880, 12875044, 16093805, 18392920, 19807760, 25750088, 32187610, 36785840, 51500176, 64375220, 128750440, 257500880]

約数ペア:

[(1, 257500880), (2, 128750440), (4, 64375220), (5, 51500176), (7, 36785840), (8, 32187610), (10, 25750088), (13, 19807760), (14, 18392920), (16, 16093805), (20, 12875044), (26, 9903880), (28, 9196460), (31, 8306480), (35, 7357168), (40, 6437522), (49, 5255120), (52, 4951940), (56, 4598230), (62, 4153240), (65, 3961552), (70, 3678584), (80, 3218761), (91, 2829680), (98, 2627560), (104, 2475970), (112, 2299115), (124, 2076620), (130, 1980776), (140, 1839292), (155, 1661296), (163, 1579760), (182, 1414840), (196, 1313780), (208, 1237985), (217, 1186640), (245, 1051024), (248, 1038310), (260, 990388), (280, 919646), (310, 830648), (326, 789880), (364, 707420), (392, 656890), (403, 638960), (434, 593320), (455, 565936), (490, 525512), (496, 519155), (520, 495194), (560, 459823), (620, 415324), (637, 404240), (652, 394940), (728, 353710), (784, 328445), (806, 319480), (815, 315952), (868, 296660), (910, 282968), (980, 262756), (1040, 247597), (1085, 237328), (1141, 225680), (1240, 207662), (1274, 202120), (1304, 197470), (1456, 176855), (1519, 169520), (1612, 159740), (1630, 157976), (1736, 148330), (1820, 141484), (1960, 131378), (2015, 127792), (2119, 121520), (2170, 118664), (2282, 112840), (2480, 103831), (2548, 101060), (2608, 98735), (2821, 91280), (3038, 84760), (3185, 80848), (3224, 79870), (3260, 78988), (3472, 74165), (3640, 70742), (3920, 65689), (4030, 63896), (4238, 60760), (4340, 59332), (4564, 56420), (5053, 50960), (5096, 50530), (5642, 45640), (5705, 45136), (6076, 42380), (6370, 40424), (6448, 39935), (6520, 39494), (7280, 35371), (7595, 33904), (7987, 32240), (8060, 31948), (8476, 30380), (8680, 29666), (9128, 28210), (10106, 25480), (10192, 25265), (10595, 24304), (11284, 22820), (11410, 22568), (12152, 21190), (12740, 20212), (13040, 19747), (14105, 18256), (14833, 17360), (15190, 16952), (15974, 16120)]