638645760

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{523}}^1$

素因数の和:605

約数の個数: 240

約数和(自身を含む): 2257851024

約数和(自身を除く): 1619205264

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 53, 60, 64, 72, 80, 90, 96, 106, 120, 128, 144, 159, 160, 180, 192, 212, 240, 256, 265, 288, 318, 320, 360, 384, 424, 477, 480, 512, 523, 530, 576, 636, 640, 720, 768, 795, 848, 954, 960, 1046, 1060, 1152, 1272, 1280, 1440, 1536, 1569, 1590, 1696, 1908, 1920, 2092, 2120, 2304, 2385, 2544, 2560, 2615, 2880, 3138, 3180, 3392, 3816, 3840, 4184, 4240, 4608, 4707, 4770, 5088, 5230, 5760, 6276, 6360, 6784, 7632, 7680, 7845, 8368, 8480, 9414, 9540, 10176, 10460, 11520, 12552, 12720, 13568, 15264, 15690, 16736, 16960, 18828, 19080, 20352, 20920, 23040, 23535, 25104, 25440, 27136, 27719, 30528, 31380, 33472, 33920, 37656, 38160, 40704, 41840, 47070, 50208, 50880, 55438, 61056, 62760, 66944, 67840, 75312, 76320, 81408, 83157, 83680, 94140, 100416, 101760, 110876, 122112, 125520, 133888, 135680, 138595, 150624, 152640, 166314, 167360, 188280, 200832, 203520, 221752, 244224, 249471, 251040, 267776, 277190, 301248, 305280, 332628, 334720, 376560, 401664, 407040, 415785, 443504, 498942, 502080, 554380, 602496, 610560, 665256, 669440, 753120, 803328, 831570, 887008, 997884, 1004160, 1108760, 1204992, 1221120, 1247355, 1330512, 1338880, 1506240, 1663140, 1774016, 1995768, 2008320, 2217520, 2409984, 2494710, 2661024, 3012480, 3326280, 3548032, 3991536, 4016640, 4435040, 4989420, 5322048, 6024960, 6652560, 7096064, 7983072, 8870080, 9978840, 10644096, 12049920, 13305120, 14192128, 15966144, 17740160, 19957680, 21288192, 26610240, 31932288, 35480320, 39915360, 42576384, 53220480, 63864576, 70960640, 79830720, 106440960, 127729152, 159661440, 212881920, 319322880, 638645760]

約数ペア:

[(1, 638645760), (2, 319322880), (3, 212881920), (4, 159661440), (5, 127729152), (6, 106440960), (8, 79830720), (9, 70960640), (10, 63864576), (12, 53220480), (15, 42576384), (16, 39915360), (18, 35480320), (20, 31932288), (24, 26610240), (30, 21288192), (32, 19957680), (36, 17740160), (40, 15966144), (45, 14192128), (48, 13305120), (53, 12049920), (60, 10644096), (64, 9978840), (72, 8870080), (80, 7983072), (90, 7096064), (96, 6652560), (106, 6024960), (120, 5322048), (128, 4989420), (144, 4435040), (159, 4016640), (160, 3991536), (180, 3548032), (192, 3326280), (212, 3012480), (240, 2661024), (256, 2494710), (265, 2409984), (288, 2217520), (318, 2008320), (320, 1995768), (360, 1774016), (384, 1663140), (424, 1506240), (477, 1338880), (480, 1330512), (512, 1247355), (523, 1221120), (530, 1204992), (576, 1108760), (636, 1004160), (640, 997884), (720, 887008), (768, 831570), (795, 803328), (848, 753120), (954, 669440), (960, 665256), (1046, 610560), (1060, 602496), (1152, 554380), (1272, 502080), (1280, 498942), (1440, 443504), (1536, 415785), (1569, 407040), (1590, 401664), (1696, 376560), (1908, 334720), (1920, 332628), (2092, 305280), (2120, 301248), (2304, 277190), (2385, 267776), (2544, 251040), (2560, 249471), (2615, 244224), (2880, 221752), (3138, 203520), (3180, 200832), (3392, 188280), (3816, 167360), (3840, 166314), (4184, 152640), (4240, 150624), (4608, 138595), (4707, 135680), (4770, 133888), (5088, 125520), (5230, 122112), (5760, 110876), (6276, 101760), (6360, 100416), (6784, 94140), (7632, 83680), (7680, 83157), (7845, 81408), (8368, 76320), (8480, 75312), (9414, 67840), (9540, 66944), (10176, 62760), (10460, 61056), (11520, 55438), (12552, 50880), (12720, 50208), (13568, 47070), (15264, 41840), (15690, 40704), (16736, 38160), (16960, 37656), (18828, 33920), (19080, 33472), (20352, 31380), (20920, 30528), (23040, 27719), (23535, 27136), (25104, 25440)]