638411520

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{173}}^1$

素因数の和:259

約数の個数: 216

約数和(自身を含む): 2118998448

約数和(自身を除く): 1480586928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 173, 186, 192, 240, 248, 256, 310, 320, 346, 372, 384, 465, 480, 496, 519, 620, 640, 692, 744, 768, 865, 930, 960, 961, 992, 1038, 1240, 1280, 1384, 1488, 1730, 1860, 1920, 1922, 1984, 2076, 2480, 2595, 2768, 2883, 2976, 3460, 3720, 3840, 3844, 3968, 4152, 4805, 4960, 5190, 5363, 5536, 5766, 5952, 6920, 7440, 7688, 7936, 8304, 9610, 9920, 10380, 10726, 11072, 11532, 11904, 13840, 14415, 14880, 15376, 16089, 16608, 19220, 19840, 20760, 21452, 22144, 23064, 23808, 26815, 27680, 28830, 29760, 30752, 32178, 33216, 38440, 39680, 41520, 42904, 44288, 46128, 53630, 55360, 57660, 59520, 61504, 64356, 66432, 76880, 80445, 83040, 85808, 92256, 107260, 110720, 115320, 119040, 123008, 128712, 132864, 153760, 160890, 166080, 166253, 171616, 184512, 214520, 221440, 230640, 246016, 257424, 307520, 321780, 332160, 332506, 343232, 369024, 429040, 461280, 498759, 514848, 615040, 643560, 664320, 665012, 686464, 738048, 831265, 858080, 922560, 997518, 1029696, 1230080, 1287120, 1330024, 1372928, 1662530, 1716160, 1845120, 1995036, 2059392, 2493795, 2574240, 2660048, 3325060, 3432320, 3690240, 3990072, 4118784, 4987590, 5148480, 5320096, 6650120, 6864640, 7980144, 9975180, 10296960, 10640192, 13300240, 15960288, 19950360, 20593920, 21280384, 26600480, 31920576, 39900720, 42560768, 53200960, 63841152, 79801440, 106401920, 127682304, 159602880, 212803840, 319205760, 638411520]

約数ペア:

[(1, 638411520), (2, 319205760), (3, 212803840), (4, 159602880), (5, 127682304), (6, 106401920), (8, 79801440), (10, 63841152), (12, 53200960), (15, 42560768), (16, 39900720), (20, 31920576), (24, 26600480), (30, 21280384), (31, 20593920), (32, 19950360), (40, 15960288), (48, 13300240), (60, 10640192), (62, 10296960), (64, 9975180), (80, 7980144), (93, 6864640), (96, 6650120), (120, 5320096), (124, 5148480), (128, 4987590), (155, 4118784), (160, 3990072), (173, 3690240), (186, 3432320), (192, 3325060), (240, 2660048), (248, 2574240), (256, 2493795), (310, 2059392), (320, 1995036), (346, 1845120), (372, 1716160), (384, 1662530), (465, 1372928), (480, 1330024), (496, 1287120), (519, 1230080), (620, 1029696), (640, 997518), (692, 922560), (744, 858080), (768, 831265), (865, 738048), (930, 686464), (960, 665012), (961, 664320), (992, 643560), (1038, 615040), (1240, 514848), (1280, 498759), (1384, 461280), (1488, 429040), (1730, 369024), (1860, 343232), (1920, 332506), (1922, 332160), (1984, 321780), (2076, 307520), (2480, 257424), (2595, 246016), (2768, 230640), (2883, 221440), (2976, 214520), (3460, 184512), (3720, 171616), (3840, 166253), (3844, 166080), (3968, 160890), (4152, 153760), (4805, 132864), (4960, 128712), (5190, 123008), (5363, 119040), (5536, 115320), (5766, 110720), (5952, 107260), (6920, 92256), (7440, 85808), (7688, 83040), (7936, 80445), (8304, 76880), (9610, 66432), (9920, 64356), (10380, 61504), (10726, 59520), (11072, 57660), (11532, 55360), (11904, 53630), (13840, 46128), (14415, 44288), (14880, 42904), (15376, 41520), (16089, 39680), (16608, 38440), (19220, 33216), (19840, 32178), (20760, 30752), (21452, 29760), (22144, 28830), (23064, 27680), (23808, 26815)]