400212480

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:139

約数の個数: 240

約数和(自身を含む): 1353699072

約数和(自身を除く): 953486592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 41, 48, 60, 62, 64, 80, 82, 93, 96, 120, 123, 124, 128, 155, 160, 164, 186, 192, 205, 240, 246, 248, 256, 310, 320, 328, 372, 384, 410, 465, 480, 492, 496, 512, 615, 620, 640, 656, 744, 768, 820, 930, 960, 984, 992, 1230, 1240, 1271, 1280, 1312, 1488, 1536, 1640, 1681, 1860, 1920, 1968, 1984, 2460, 2480, 2542, 2560, 2624, 2976, 3280, 3362, 3720, 3813, 3840, 3936, 3968, 4920, 4960, 5043, 5084, 5248, 5952, 6355, 6560, 6724, 7440, 7626, 7680, 7872, 7936, 8405, 9840, 9920, 10086, 10168, 10496, 11904, 12710, 13120, 13448, 14880, 15252, 15744, 15872, 16810, 19065, 19680, 19840, 20172, 20336, 20992, 23808, 25215, 25420, 26240, 26896, 29760, 30504, 31488, 33620, 38130, 39360, 39680, 40344, 40672, 47616, 50430, 50840, 52111, 52480, 53792, 59520, 61008, 62976, 67240, 76260, 78720, 79360, 80688, 81344, 100860, 101680, 104222, 104960, 107584, 119040, 122016, 134480, 152520, 156333, 157440, 161376, 162688, 201720, 203360, 208444, 215168, 238080, 244032, 260555, 268960, 305040, 312666, 314880, 322752, 325376, 403440, 406720, 416888, 430336, 488064, 521110, 537920, 610080, 625332, 645504, 650752, 781665, 806880, 813440, 833776, 860672, 976128, 1042220, 1075840, 1220160, 1250664, 1291008, 1563330, 1613760, 1626880, 1667552, 1952256, 2084440, 2151680, 2440320, 2501328, 2582016, 3126660, 3227520, 3253760, 3335104, 4168880, 4303360, 4880640, 5002656, 6253320, 6455040, 6670208, 8337760, 9761280, 10005312, 12506640, 12910080, 13340416, 16675520, 20010624, 25013280, 26680832, 33351040, 40021248, 50026560, 66702080, 80042496, 100053120, 133404160, 200106240, 400212480]

約数ペア:

[(1, 400212480), (2, 200106240), (3, 133404160), (4, 100053120), (5, 80042496), (6, 66702080), (8, 50026560), (10, 40021248), (12, 33351040), (15, 26680832), (16, 25013280), (20, 20010624), (24, 16675520), (30, 13340416), (31, 12910080), (32, 12506640), (40, 10005312), (41, 9761280), (48, 8337760), (60, 6670208), (62, 6455040), (64, 6253320), (80, 5002656), (82, 4880640), (93, 4303360), (96, 4168880), (120, 3335104), (123, 3253760), (124, 3227520), (128, 3126660), (155, 2582016), (160, 2501328), (164, 2440320), (186, 2151680), (192, 2084440), (205, 1952256), (240, 1667552), (246, 1626880), (248, 1613760), (256, 1563330), (310, 1291008), (320, 1250664), (328, 1220160), (372, 1075840), (384, 1042220), (410, 976128), (465, 860672), (480, 833776), (492, 813440), (496, 806880), (512, 781665), (615, 650752), (620, 645504), (640, 625332), (656, 610080), (744, 537920), (768, 521110), (820, 488064), (930, 430336), (960, 416888), (984, 406720), (992, 403440), (1230, 325376), (1240, 322752), (1271, 314880), (1280, 312666), (1312, 305040), (1488, 268960), (1536, 260555), (1640, 244032), (1681, 238080), (1860, 215168), (1920, 208444), (1968, 203360), (1984, 201720), (2460, 162688), (2480, 161376), (2542, 157440), (2560, 156333), (2624, 152520), (2976, 134480), (3280, 122016), (3362, 119040), (3720, 107584), (3813, 104960), (3840, 104222), (3936, 101680), (3968, 100860), (4920, 81344), (4960, 80688), (5043, 79360), (5084, 78720), (5248, 76260), (5952, 67240), (6355, 62976), (6560, 61008), (6724, 59520), (7440, 53792), (7626, 52480), (7680, 52111), (7872, 50840), (7936, 50430), (8405, 47616), (9840, 40672), (9920, 40344), (10086, 39680), (10168, 39360), (10496, 38130), (11904, 33620), (12710, 31488), (13120, 30504), (13448, 29760), (14880, 26896), (15252, 26240), (15744, 25420), (15872, 25215), (16810, 23808), (19065, 20992), (19680, 20336), (19840, 20172)]