256016880

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{643}}^1$

素因数の和:748

約数の個数: 240

約数和(自身を含む): 996602880

約数和(自身を除く): 740586000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 79, 80, 84, 90, 105, 112, 120, 126, 140, 144, 158, 168, 180, 210, 237, 240, 252, 280, 315, 316, 336, 360, 395, 420, 474, 504, 553, 560, 630, 632, 643, 711, 720, 790, 840, 948, 1008, 1106, 1185, 1260, 1264, 1286, 1422, 1580, 1659, 1680, 1896, 1929, 2212, 2370, 2520, 2572, 2765, 2844, 3160, 3215, 3318, 3555, 3792, 3858, 4424, 4501, 4740, 4977, 5040, 5144, 5530, 5688, 5787, 6320, 6430, 6636, 7110, 7716, 8295, 8848, 9002, 9480, 9645, 9954, 10288, 11060, 11376, 11574, 12860, 13272, 13503, 14220, 15432, 16590, 18004, 18960, 19290, 19908, 22120, 22505, 23148, 24885, 25720, 26544, 27006, 28440, 28935, 30864, 33180, 36008, 38580, 39816, 40509, 44240, 45010, 46296, 49770, 50797, 51440, 54012, 56880, 57870, 66360, 67515, 72016, 77160, 79632, 81018, 90020, 92592, 99540, 101594, 108024, 115740, 132720, 135030, 152391, 154320, 162036, 180040, 199080, 202545, 203188, 216048, 231480, 253985, 270060, 304782, 324072, 355579, 360080, 398160, 405090, 406376, 457173, 462960, 507970, 540120, 609564, 648144, 711158, 761955, 810180, 812752, 914346, 1015940, 1066737, 1080240, 1219128, 1422316, 1523910, 1620360, 1777895, 1828692, 2031880, 2133474, 2285865, 2438256, 2844632, 3047820, 3200211, 3240720, 3555790, 3657384, 4063760, 4266948, 4571730, 5333685, 5689264, 6095640, 6400422, 7111580, 7314768, 8533896, 9143460, 10667370, 12191280, 12800844, 14223160, 16001055, 17067792, 18286920, 21334740, 25601688, 28446320, 32002110, 36573840, 42669480, 51203376, 64004220, 85338960, 128008440, 256016880]

約数ペア:

[(1, 256016880), (2, 128008440), (3, 85338960), (4, 64004220), (5, 51203376), (6, 42669480), (7, 36573840), (8, 32002110), (9, 28446320), (10, 25601688), (12, 21334740), (14, 18286920), (15, 17067792), (16, 16001055), (18, 14223160), (20, 12800844), (21, 12191280), (24, 10667370), (28, 9143460), (30, 8533896), (35, 7314768), (36, 7111580), (40, 6400422), (42, 6095640), (45, 5689264), (48, 5333685), (56, 4571730), (60, 4266948), (63, 4063760), (70, 3657384), (72, 3555790), (79, 3240720), (80, 3200211), (84, 3047820), (90, 2844632), (105, 2438256), (112, 2285865), (120, 2133474), (126, 2031880), (140, 1828692), (144, 1777895), (158, 1620360), (168, 1523910), (180, 1422316), (210, 1219128), (237, 1080240), (240, 1066737), (252, 1015940), (280, 914346), (315, 812752), (316, 810180), (336, 761955), (360, 711158), (395, 648144), (420, 609564), (474, 540120), (504, 507970), (553, 462960), (560, 457173), (630, 406376), (632, 405090), (643, 398160), (711, 360080), (720, 355579), (790, 324072), (840, 304782), (948, 270060), (1008, 253985), (1106, 231480), (1185, 216048), (1260, 203188), (1264, 202545), (1286, 199080), (1422, 180040), (1580, 162036), (1659, 154320), (1680, 152391), (1896, 135030), (1929, 132720), (2212, 115740), (2370, 108024), (2520, 101594), (2572, 99540), (2765, 92592), (2844, 90020), (3160, 81018), (3215, 79632), (3318, 77160), (3555, 72016), (3792, 67515), (3858, 66360), (4424, 57870), (4501, 56880), (4740, 54012), (4977, 51440), (5040, 50797), (5144, 49770), (5530, 46296), (5688, 45010), (5787, 44240), (6320, 40509), (6430, 39816), (6636, 38580), (7110, 36008), (7716, 33180), (8295, 30864), (8848, 28935), (9002, 28440), (9480, 27006), (9645, 26544), (9954, 25720), (10288, 24885), (11060, 23148), (11376, 22505), (11574, 22120), (12860, 19908), (13272, 19290), (13503, 18960), (14220, 18004), (15432, 16590)]