256557240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 256

約数和(自身を含む): 903168000

約数和(自身を除く): 646610760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 79, 90, 93, 97, 108, 120, 124, 135, 155, 158, 180, 186, 194, 216, 237, 248, 270, 279, 291, 310, 316, 360, 372, 388, 395, 465, 474, 485, 540, 558, 582, 620, 632, 711, 744, 776, 790, 837, 873, 930, 948, 970, 1080, 1116, 1164, 1185, 1240, 1395, 1422, 1455, 1580, 1674, 1746, 1860, 1896, 1940, 2133, 2232, 2328, 2370, 2449, 2619, 2790, 2844, 2910, 3007, 3160, 3348, 3492, 3555, 3720, 3880, 4185, 4266, 4365, 4740, 4898, 5238, 5580, 5688, 5820, 6014, 6696, 6984, 7110, 7347, 7663, 8370, 8532, 8730, 9021, 9480, 9796, 10476, 10665, 11160, 11640, 12028, 12245, 13095, 14220, 14694, 15035, 15326, 16740, 17064, 17460, 18042, 19592, 20952, 21330, 22041, 22989, 24056, 24490, 26190, 27063, 28440, 29388, 30070, 30652, 33480, 34920, 36084, 36735, 38315, 42660, 44082, 45105, 45978, 48980, 52380, 54126, 58776, 60140, 61304, 66123, 68967, 72168, 73470, 76630, 81189, 85320, 88164, 90210, 91956, 97960, 104760, 108252, 110205, 114945, 120280, 132246, 135315, 137934, 146940, 153260, 162378, 176328, 180420, 183912, 206901, 216504, 220410, 229890, 237553, 264492, 270630, 275868, 293880, 306520, 324756, 330615, 344835, 360840, 405945, 413802, 440820, 459780, 475106, 528984, 541260, 551736, 649512, 661230, 689670, 712659, 811890, 827604, 881640, 919560, 950212, 1034505, 1082520, 1187765, 1322460, 1379340, 1425318, 1623780, 1655208, 1900424, 2069010, 2137977, 2375530, 2644920, 2758680, 2850636, 3247560, 3563295, 4138020, 4275954, 4751060, 5701272, 6413931, 7126590, 8276040, 8551908, 9502120, 10689885, 12827862, 14253180, 17103816, 21379770, 25655724, 28506360, 32069655, 42759540, 51311448, 64139310, 85519080, 128278620, 256557240]

約数ペア:

[(1, 256557240), (2, 128278620), (3, 85519080), (4, 64139310), (5, 51311448), (6, 42759540), (8, 32069655), (9, 28506360), (10, 25655724), (12, 21379770), (15, 17103816), (18, 14253180), (20, 12827862), (24, 10689885), (27, 9502120), (30, 8551908), (31, 8276040), (36, 7126590), (40, 6413931), (45, 5701272), (54, 4751060), (60, 4275954), (62, 4138020), (72, 3563295), (79, 3247560), (90, 2850636), (93, 2758680), (97, 2644920), (108, 2375530), (120, 2137977), (124, 2069010), (135, 1900424), (155, 1655208), (158, 1623780), (180, 1425318), (186, 1379340), (194, 1322460), (216, 1187765), (237, 1082520), (248, 1034505), (270, 950212), (279, 919560), (291, 881640), (310, 827604), (316, 811890), (360, 712659), (372, 689670), (388, 661230), (395, 649512), (465, 551736), (474, 541260), (485, 528984), (540, 475106), (558, 459780), (582, 440820), (620, 413802), (632, 405945), (711, 360840), (744, 344835), (776, 330615), (790, 324756), (837, 306520), (873, 293880), (930, 275868), (948, 270630), (970, 264492), (1080, 237553), (1116, 229890), (1164, 220410), (1185, 216504), (1240, 206901), (1395, 183912), (1422, 180420), (1455, 176328), (1580, 162378), (1674, 153260), (1746, 146940), (1860, 137934), (1896, 135315), (1940, 132246), (2133, 120280), (2232, 114945), (2328, 110205), (2370, 108252), (2449, 104760), (2619, 97960), (2790, 91956), (2844, 90210), (2910, 88164), (3007, 85320), (3160, 81189), (3348, 76630), (3492, 73470), (3555, 72168), (3720, 68967), (3880, 66123), (4185, 61304), (4266, 60140), (4365, 58776), (4740, 54126), (4898, 52380), (5238, 48980), (5580, 45978), (5688, 45105), (5820, 44082), (6014, 42660), (6696, 38315), (6984, 36735), (7110, 36084), (7347, 34920), (7663, 33480), (8370, 30652), (8532, 30070), (8730, 29388), (9021, 28440), (9480, 27063), (9796, 26190), (10476, 24490), (10665, 24056), (11160, 22989), (11640, 22041), (12028, 21330), (12245, 20952), (13095, 19592), (14220, 18042), (14694, 17460), (15035, 17064), (15326, 16740)]