128456748

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{599}}^1$

素因数の和:676

約数の個数: 144

約数和(自身を含む): 398361600

約数和(自身を除く): 269904852

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 28, 36, 37, 42, 46, 63, 69, 74, 84, 92, 111, 126, 138, 148, 161, 207, 222, 252, 259, 276, 322, 333, 414, 444, 483, 518, 599, 644, 666, 777, 828, 851, 966, 1036, 1198, 1332, 1449, 1554, 1702, 1797, 1932, 2331, 2396, 2553, 2898, 3108, 3404, 3594, 4193, 4662, 5106, 5391, 5796, 5957, 7188, 7659, 8386, 9324, 10212, 10782, 11914, 12579, 13777, 15318, 16772, 17871, 21564, 22163, 23828, 25158, 27554, 30636, 35742, 37737, 41331, 44326, 50316, 53613, 55108, 66489, 71484, 75474, 82662, 88652, 96439, 107226, 123993, 132978, 150948, 155141, 165324, 192878, 199467, 214452, 247986, 265956, 289317, 310282, 385756, 398934, 465423, 495972, 509749, 578634, 620564, 797868, 867951, 930846, 1019498, 1157268, 1396269, 1529247, 1735902, 1861692, 2038996, 2792538, 3058494, 3471804, 3568243, 4587741, 5585076, 6116988, 7136486, 9175482, 10704729, 14272972, 18350964, 21409458, 32114187, 42818916, 64228374, 128456748]

約数ペア:

[(1, 128456748), (2, 64228374), (3, 42818916), (4, 32114187), (6, 21409458), (7, 18350964), (9, 14272972), (12, 10704729), (14, 9175482), (18, 7136486), (21, 6116988), (23, 5585076), (28, 4587741), (36, 3568243), (37, 3471804), (42, 3058494), (46, 2792538), (63, 2038996), (69, 1861692), (74, 1735902), (84, 1529247), (92, 1396269), (111, 1157268), (126, 1019498), (138, 930846), (148, 867951), (161, 797868), (207, 620564), (222, 578634), (252, 509749), (259, 495972), (276, 465423), (322, 398934), (333, 385756), (414, 310282), (444, 289317), (483, 265956), (518, 247986), (599, 214452), (644, 199467), (666, 192878), (777, 165324), (828, 155141), (851, 150948), (966, 132978), (1036, 123993), (1198, 107226), (1332, 96439), (1449, 88652), (1554, 82662), (1702, 75474), (1797, 71484), (1932, 66489), (2331, 55108), (2396, 53613), (2553, 50316), (2898, 44326), (3108, 41331), (3404, 37737), (3594, 35742), (4193, 30636), (4662, 27554), (5106, 25158), (5391, 23828), (5796, 22163), (5957, 21564), (7188, 17871), (7659, 16772), (8386, 15318), (9324, 13777), (10212, 12579), (10782, 11914)]