256479720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{823}}^1$

素因数の和:904

約数の個数: 192

約数和(自身を含む): 913057920

約数和(自身を除く): 656578200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 53, 56, 60, 70, 84, 98, 105, 106, 120, 140, 147, 159, 168, 196, 210, 212, 245, 265, 280, 294, 318, 371, 392, 420, 424, 490, 530, 588, 636, 735, 742, 795, 823, 840, 980, 1060, 1113, 1176, 1272, 1470, 1484, 1590, 1646, 1855, 1960, 2120, 2226, 2469, 2597, 2940, 2968, 3180, 3292, 3710, 4115, 4452, 4938, 5194, 5565, 5761, 5880, 6360, 6584, 7420, 7791, 8230, 8904, 9876, 10388, 11130, 11522, 12345, 12985, 14840, 15582, 16460, 17283, 19752, 20776, 22260, 23044, 24690, 25970, 28805, 31164, 32920, 34566, 38955, 40327, 43619, 44520, 46088, 49380, 51940, 57610, 62328, 69132, 77910, 80654, 86415, 87238, 98760, 103880, 115220, 120981, 130857, 138264, 155820, 161308, 172830, 174476, 201635, 218095, 230440, 241962, 261714, 305333, 311640, 322616, 345660, 348952, 403270, 436190, 483924, 523428, 604905, 610666, 654285, 691320, 806540, 872380, 915999, 967848, 1046856, 1209810, 1221332, 1308570, 1526665, 1613080, 1744760, 1831998, 2137331, 2419620, 2442664, 2617140, 3053330, 3663996, 4274662, 4579995, 4839240, 5234280, 6106660, 6411993, 7327992, 8549324, 9159990, 10686655, 12213320, 12823986, 17098648, 18319980, 21373310, 25647972, 32059965, 36639960, 42746620, 51295944, 64119930, 85493240, 128239860, 256479720]

約数ペア:

[(1, 256479720), (2, 128239860), (3, 85493240), (4, 64119930), (5, 51295944), (6, 42746620), (7, 36639960), (8, 32059965), (10, 25647972), (12, 21373310), (14, 18319980), (15, 17098648), (20, 12823986), (21, 12213320), (24, 10686655), (28, 9159990), (30, 8549324), (35, 7327992), (40, 6411993), (42, 6106660), (49, 5234280), (53, 4839240), (56, 4579995), (60, 4274662), (70, 3663996), (84, 3053330), (98, 2617140), (105, 2442664), (106, 2419620), (120, 2137331), (140, 1831998), (147, 1744760), (159, 1613080), (168, 1526665), (196, 1308570), (210, 1221332), (212, 1209810), (245, 1046856), (265, 967848), (280, 915999), (294, 872380), (318, 806540), (371, 691320), (392, 654285), (420, 610666), (424, 604905), (490, 523428), (530, 483924), (588, 436190), (636, 403270), (735, 348952), (742, 345660), (795, 322616), (823, 311640), (840, 305333), (980, 261714), (1060, 241962), (1113, 230440), (1176, 218095), (1272, 201635), (1470, 174476), (1484, 172830), (1590, 161308), (1646, 155820), (1855, 138264), (1960, 130857), (2120, 120981), (2226, 115220), (2469, 103880), (2597, 98760), (2940, 87238), (2968, 86415), (3180, 80654), (3292, 77910), (3710, 69132), (4115, 62328), (4452, 57610), (4938, 51940), (5194, 49380), (5565, 46088), (5761, 44520), (5880, 43619), (6360, 40327), (6584, 38955), (7420, 34566), (7791, 32920), (8230, 31164), (8904, 28805), (9876, 25970), (10388, 24690), (11130, 23044), (11522, 22260), (12345, 20776), (12985, 19752), (14840, 17283), (15582, 16460)]