257136320

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{23}}^2\times {\mathrm{31}}^1$

素因数の和:108

約数の個数: 252

約数和(自身を含む): 768608064

約数和(自身を除く): 511471744

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 31, 32, 35, 40, 46, 49, 56, 62, 64, 70, 80, 92, 98, 112, 115, 124, 140, 155, 160, 161, 184, 196, 217, 224, 230, 245, 248, 280, 310, 320, 322, 368, 392, 434, 448, 460, 490, 496, 529, 560, 620, 644, 713, 736, 784, 805, 868, 920, 980, 992, 1058, 1085, 1120, 1127, 1240, 1288, 1426, 1472, 1519, 1568, 1610, 1736, 1840, 1960, 1984, 2116, 2170, 2240, 2254, 2480, 2576, 2645, 2852, 3038, 3136, 3220, 3472, 3565, 3680, 3703, 3920, 4232, 4340, 4508, 4960, 4991, 5152, 5290, 5635, 5704, 6076, 6440, 6944, 7130, 7360, 7406, 7595, 7840, 8464, 8680, 9016, 9920, 9982, 10304, 10580, 11270, 11408, 12152, 12880, 13888, 14260, 14812, 15190, 15680, 16399, 16928, 17360, 18032, 18515, 19964, 21160, 22540, 22816, 24304, 24955, 25760, 25921, 28520, 29624, 30380, 32798, 33856, 34720, 34937, 36064, 37030, 39928, 42320, 45080, 45632, 48608, 49910, 51520, 51842, 57040, 59248, 60760, 65596, 69440, 69874, 72128, 74060, 79856, 81995, 84640, 90160, 97216, 99820, 103684, 114080, 114793, 118496, 121520, 129605, 131192, 139748, 148120, 159712, 163990, 169280, 174685, 180320, 199640, 207368, 228160, 229586, 236992, 243040, 259210, 262384, 279496, 296240, 319424, 327980, 349370, 360640, 399280, 414736, 459172, 486080, 518420, 524768, 558992, 573965, 592480, 655960, 698740, 798560, 803551, 829472, 918344, 1036840, 1049536, 1117984, 1147930, 1184960, 1311920, 1397480, 1597120, 1607102, 1658944, 1836688, 2073680, 2235968, 2295860, 2623840, 2794960, 3214204, 3673376, 4017755, 4147360, 4591720, 5247680, 5589920, 6428408, 7346752, 8035510, 8294720, 9183440, 11179840, 12856816, 16071020, 18366880, 25713632, 32142040, 36733760, 51427264, 64284080, 128568160, 257136320]

約数ペア:

[(1, 257136320), (2, 128568160), (4, 64284080), (5, 51427264), (7, 36733760), (8, 32142040), (10, 25713632), (14, 18366880), (16, 16071020), (20, 12856816), (23, 11179840), (28, 9183440), (31, 8294720), (32, 8035510), (35, 7346752), (40, 6428408), (46, 5589920), (49, 5247680), (56, 4591720), (62, 4147360), (64, 4017755), (70, 3673376), (80, 3214204), (92, 2794960), (98, 2623840), (112, 2295860), (115, 2235968), (124, 2073680), (140, 1836688), (155, 1658944), (160, 1607102), (161, 1597120), (184, 1397480), (196, 1311920), (217, 1184960), (224, 1147930), (230, 1117984), (245, 1049536), (248, 1036840), (280, 918344), (310, 829472), (320, 803551), (322, 798560), (368, 698740), (392, 655960), (434, 592480), (448, 573965), (460, 558992), (490, 524768), (496, 518420), (529, 486080), (560, 459172), (620, 414736), (644, 399280), (713, 360640), (736, 349370), (784, 327980), (805, 319424), (868, 296240), (920, 279496), (980, 262384), (992, 259210), (1058, 243040), (1085, 236992), (1120, 229586), (1127, 228160), (1240, 207368), (1288, 199640), (1426, 180320), (1472, 174685), (1519, 169280), (1568, 163990), (1610, 159712), (1736, 148120), (1840, 139748), (1960, 131192), (1984, 129605), (2116, 121520), (2170, 118496), (2240, 114793), (2254, 114080), (2480, 103684), (2576, 99820), (2645, 97216), (2852, 90160), (3038, 84640), (3136, 81995), (3220, 79856), (3472, 74060), (3565, 72128), (3680, 69874), (3703, 69440), (3920, 65596), (4232, 60760), (4340, 59248), (4508, 57040), (4960, 51842), (4991, 51520), (5152, 49910), (5290, 48608), (5635, 45632), (5704, 45080), (6076, 42320), (6440, 39928), (6944, 37030), (7130, 36064), (7360, 34937), (7406, 34720), (7595, 33856), (7840, 32798), (8464, 30380), (8680, 29624), (9016, 28520), (9920, 25921), (9982, 25760), (10304, 24955), (10580, 24304), (11270, 22816), (11408, 22540), (12152, 21160), (12880, 19964), (13888, 18515), (14260, 18032), (14812, 17360), (15190, 16928), (15680, 16399)]