256387680

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:371

約数の個数: 240

約数和(自身を含む): 920614464

約数和(自身を除く): 664226784

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 73, 80, 81, 90, 96, 108, 120, 135, 144, 146, 160, 162, 180, 216, 219, 240, 270, 271, 288, 292, 324, 360, 365, 405, 432, 438, 480, 540, 542, 584, 648, 657, 720, 730, 810, 813, 864, 876, 1080, 1084, 1095, 1168, 1296, 1314, 1355, 1440, 1460, 1620, 1626, 1752, 1971, 2160, 2168, 2190, 2336, 2439, 2592, 2628, 2710, 2920, 3240, 3252, 3285, 3504, 3942, 4065, 4320, 4336, 4380, 4878, 5256, 5420, 5840, 5913, 6480, 6504, 6570, 7008, 7317, 7884, 8130, 8672, 8760, 9756, 9855, 10512, 10840, 11680, 11826, 12195, 12960, 13008, 13140, 14634, 15768, 16260, 17520, 19512, 19710, 19783, 21024, 21680, 21951, 23652, 24390, 26016, 26280, 29268, 29565, 31536, 32520, 35040, 36585, 39024, 39420, 39566, 43360, 43902, 47304, 48780, 52560, 58536, 59130, 59349, 63072, 65040, 73170, 78048, 78840, 79132, 87804, 94608, 97560, 98915, 105120, 109755, 117072, 118260, 118698, 130080, 146340, 157680, 158264, 175608, 178047, 189216, 195120, 197830, 219510, 234144, 236520, 237396, 292680, 296745, 315360, 316528, 351216, 356094, 390240, 395660, 439020, 473040, 474792, 534141, 585360, 593490, 633056, 702432, 712188, 791320, 878040, 890235, 946080, 949584, 1068282, 1170720, 1186980, 1424376, 1582640, 1602423, 1756080, 1780470, 1899168, 2136564, 2373960, 2670705, 2848752, 3165280, 3204846, 3512160, 3560940, 4273128, 4747920, 5341410, 5697504, 6409692, 7121880, 8012115, 8546256, 9495840, 10682820, 12819384, 14243760, 16024230, 17092512, 21365640, 25638768, 28487520, 32048460, 42731280, 51277536, 64096920, 85462560, 128193840, 256387680]

約数ペア:

[(1, 256387680), (2, 128193840), (3, 85462560), (4, 64096920), (5, 51277536), (6, 42731280), (8, 32048460), (9, 28487520), (10, 25638768), (12, 21365640), (15, 17092512), (16, 16024230), (18, 14243760), (20, 12819384), (24, 10682820), (27, 9495840), (30, 8546256), (32, 8012115), (36, 7121880), (40, 6409692), (45, 5697504), (48, 5341410), (54, 4747920), (60, 4273128), (72, 3560940), (73, 3512160), (80, 3204846), (81, 3165280), (90, 2848752), (96, 2670705), (108, 2373960), (120, 2136564), (135, 1899168), (144, 1780470), (146, 1756080), (160, 1602423), (162, 1582640), (180, 1424376), (216, 1186980), (219, 1170720), (240, 1068282), (270, 949584), (271, 946080), (288, 890235), (292, 878040), (324, 791320), (360, 712188), (365, 702432), (405, 633056), (432, 593490), (438, 585360), (480, 534141), (540, 474792), (542, 473040), (584, 439020), (648, 395660), (657, 390240), (720, 356094), (730, 351216), (810, 316528), (813, 315360), (864, 296745), (876, 292680), (1080, 237396), (1084, 236520), (1095, 234144), (1168, 219510), (1296, 197830), (1314, 195120), (1355, 189216), (1440, 178047), (1460, 175608), (1620, 158264), (1626, 157680), (1752, 146340), (1971, 130080), (2160, 118698), (2168, 118260), (2190, 117072), (2336, 109755), (2439, 105120), (2592, 98915), (2628, 97560), (2710, 94608), (2920, 87804), (3240, 79132), (3252, 78840), (3285, 78048), (3504, 73170), (3942, 65040), (4065, 63072), (4320, 59349), (4336, 59130), (4380, 58536), (4878, 52560), (5256, 48780), (5420, 47304), (5840, 43902), (5913, 43360), (6480, 39566), (6504, 39420), (6570, 39024), (7008, 36585), (7317, 35040), (7884, 32520), (8130, 31536), (8672, 29565), (8760, 29268), (9756, 26280), (9855, 26016), (10512, 24390), (10840, 23652), (11680, 21951), (11826, 21680), (12195, 21024), (12960, 19783), (13008, 19710), (13140, 19512), (14634, 17520), (15768, 16260)]