256609920

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:403

約数の個数: 256

約数和(自身を含む): 953153280

約数和(自身を除く): 696543360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 61, 64, 70, 80, 84, 96, 105, 112, 120, 122, 128, 140, 160, 168, 183, 192, 210, 224, 240, 244, 280, 305, 313, 320, 336, 366, 384, 420, 427, 448, 480, 488, 560, 610, 626, 640, 672, 732, 840, 854, 896, 915, 939, 960, 976, 1120, 1220, 1252, 1281, 1344, 1464, 1565, 1680, 1708, 1830, 1878, 1920, 1952, 2135, 2191, 2240, 2440, 2504, 2562, 2688, 2928, 3130, 3360, 3416, 3660, 3756, 3904, 4270, 4382, 4480, 4695, 4880, 5008, 5124, 5856, 6260, 6405, 6573, 6720, 6832, 7320, 7512, 7808, 8540, 8764, 9390, 9760, 10016, 10248, 10955, 11712, 12520, 12810, 13146, 13440, 13664, 14640, 15024, 17080, 17528, 18780, 19093, 19520, 20032, 20496, 21910, 23424, 25040, 25620, 26292, 27328, 29280, 30048, 32865, 34160, 35056, 37560, 38186, 39040, 40064, 40992, 43820, 50080, 51240, 52584, 54656, 57279, 58560, 60096, 65730, 68320, 70112, 75120, 76372, 81984, 87640, 95465, 100160, 102480, 105168, 114558, 117120, 120192, 131460, 133651, 136640, 140224, 150240, 152744, 163968, 175280, 190930, 200320, 204960, 210336, 229116, 262920, 267302, 273280, 280448, 286395, 300480, 305488, 350560, 381860, 400953, 409920, 420672, 458232, 525840, 534604, 572790, 600960, 610976, 668255, 701120, 763720, 801906, 819840, 841344, 916464, 1051680, 1069208, 1145580, 1221952, 1336510, 1402240, 1527440, 1603812, 1832928, 2004765, 2103360, 2138416, 2291160, 2443904, 2673020, 3054880, 3207624, 3665856, 4009530, 4206720, 4276832, 4582320, 5346040, 6109760, 6415248, 7331712, 8019060, 8553664, 9164640, 10692080, 12219520, 12830496, 16038120, 17107328, 18329280, 21384160, 25660992, 32076240, 36658560, 42768320, 51321984, 64152480, 85536640, 128304960, 256609920]

約数ペア:

[(1, 256609920), (2, 128304960), (3, 85536640), (4, 64152480), (5, 51321984), (6, 42768320), (7, 36658560), (8, 32076240), (10, 25660992), (12, 21384160), (14, 18329280), (15, 17107328), (16, 16038120), (20, 12830496), (21, 12219520), (24, 10692080), (28, 9164640), (30, 8553664), (32, 8019060), (35, 7331712), (40, 6415248), (42, 6109760), (48, 5346040), (56, 4582320), (60, 4276832), (61, 4206720), (64, 4009530), (70, 3665856), (80, 3207624), (84, 3054880), (96, 2673020), (105, 2443904), (112, 2291160), (120, 2138416), (122, 2103360), (128, 2004765), (140, 1832928), (160, 1603812), (168, 1527440), (183, 1402240), (192, 1336510), (210, 1221952), (224, 1145580), (240, 1069208), (244, 1051680), (280, 916464), (305, 841344), (313, 819840), (320, 801906), (336, 763720), (366, 701120), (384, 668255), (420, 610976), (427, 600960), (448, 572790), (480, 534604), (488, 525840), (560, 458232), (610, 420672), (626, 409920), (640, 400953), (672, 381860), (732, 350560), (840, 305488), (854, 300480), (896, 286395), (915, 280448), (939, 273280), (960, 267302), (976, 262920), (1120, 229116), (1220, 210336), (1252, 204960), (1281, 200320), (1344, 190930), (1464, 175280), (1565, 163968), (1680, 152744), (1708, 150240), (1830, 140224), (1878, 136640), (1920, 133651), (1952, 131460), (2135, 120192), (2191, 117120), (2240, 114558), (2440, 105168), (2504, 102480), (2562, 100160), (2688, 95465), (2928, 87640), (3130, 81984), (3360, 76372), (3416, 75120), (3660, 70112), (3756, 68320), (3904, 65730), (4270, 60096), (4382, 58560), (4480, 57279), (4695, 54656), (4880, 52584), (5008, 51240), (5124, 50080), (5856, 43820), (6260, 40992), (6405, 40064), (6573, 39040), (6720, 38186), (6832, 37560), (7320, 35056), (7512, 34160), (7808, 32865), (8540, 30048), (8764, 29280), (9390, 27328), (9760, 26292), (10016, 25620), (10248, 25040), (10955, 23424), (11712, 21910), (12520, 20496), (12810, 20032), (13146, 19520), (13440, 19093), (13664, 18780), (14640, 17528), (15024, 17080)]