20415360

素因数分解:

$2^7\times 3^1\times 5^1\times 7^3\times {\mathrm{31}}^1$

素因数の和:74

約数の個数: 256

約数和(自身を含む): 78336000

約数和(自身を除く): 57920640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 49, 56, 60, 62, 64, 70, 80, 84, 93, 96, 98, 105, 112, 120, 124, 128, 140, 147, 155, 160, 168, 186, 192, 196, 210, 217, 224, 240, 245, 248, 280, 294, 310, 320, 336, 343, 372, 384, 392, 420, 434, 448, 465, 480, 490, 496, 560, 588, 620, 640, 651, 672, 686, 735, 744, 784, 840, 868, 896, 930, 960, 980, 992, 1029, 1085, 1120, 1176, 1240, 1302, 1344, 1372, 1470, 1488, 1519, 1568, 1680, 1715, 1736, 1860, 1920, 1960, 1984, 2058, 2170, 2240, 2352, 2480, 2604, 2688, 2744, 2940, 2976, 3038, 3136, 3255, 3360, 3430, 3472, 3720, 3920, 3968, 4116, 4340, 4480, 4557, 4704, 4960, 5145, 5208, 5488, 5880, 5952, 6076, 6272, 6510, 6720, 6860, 6944, 7440, 7595, 7840, 8232, 8680, 9114, 9408, 9920, 10290, 10416, 10633, 10976, 11760, 11904, 12152, 13020, 13440, 13720, 13888, 14880, 15190, 15680, 16464, 17360, 18228, 18816, 19840, 20580, 20832, 21266, 21952, 22785, 23520, 24304, 26040, 27440, 27776, 29760, 30380, 31360, 31899, 32928, 34720, 36456, 41160, 41664, 42532, 43904, 45570, 47040, 48608, 52080, 53165, 54880, 59520, 60760, 63798, 65856, 69440, 72912, 82320, 83328, 85064, 91140, 94080, 97216, 104160, 106330, 109760, 121520, 127596, 131712, 138880, 145824, 159495, 164640, 170128, 182280, 194432, 208320, 212660, 219520, 243040, 255192, 291648, 318990, 329280, 340256, 364560, 416640, 425320, 486080, 510384, 583296, 637980, 658560, 680512, 729120, 850640, 972160, 1020768, 1275960, 1361024, 1458240, 1701280, 2041536, 2551920, 2916480, 3402560, 4083072, 5103840, 6805120, 10207680, 20415360]

約数ペア:

[(1, 20415360), (2, 10207680), (3, 6805120), (4, 5103840), (5, 4083072), (6, 3402560), (7, 2916480), (8, 2551920), (10, 2041536), (12, 1701280), (14, 1458240), (15, 1361024), (16, 1275960), (20, 1020768), (21, 972160), (24, 850640), (28, 729120), (30, 680512), (31, 658560), (32, 637980), (35, 583296), (40, 510384), (42, 486080), (48, 425320), (49, 416640), (56, 364560), (60, 340256), (62, 329280), (64, 318990), (70, 291648), (80, 255192), (84, 243040), (93, 219520), (96, 212660), (98, 208320), (105, 194432), (112, 182280), (120, 170128), (124, 164640), (128, 159495), (140, 145824), (147, 138880), (155, 131712), (160, 127596), (168, 121520), (186, 109760), (192, 106330), (196, 104160), (210, 97216), (217, 94080), (224, 91140), (240, 85064), (245, 83328), (248, 82320), (280, 72912), (294, 69440), (310, 65856), (320, 63798), (336, 60760), (343, 59520), (372, 54880), (384, 53165), (392, 52080), (420, 48608), (434, 47040), (448, 45570), (465, 43904), (480, 42532), (490, 41664), (496, 41160), (560, 36456), (588, 34720), (620, 32928), (640, 31899), (651, 31360), (672, 30380), (686, 29760), (735, 27776), (744, 27440), (784, 26040), (840, 24304), (868, 23520), (896, 22785), (930, 21952), (960, 21266), (980, 20832), (992, 20580), (1029, 19840), (1085, 18816), (1120, 18228), (1176, 17360), (1240, 16464), (1302, 15680), (1344, 15190), (1372, 14880), (1470, 13888), (1488, 13720), (1519, 13440), (1568, 13020), (1680, 12152), (1715, 11904), (1736, 11760), (1860, 10976), (1920, 10633), (1960, 10416), (1984, 10290), (2058, 9920), (2170, 9408), (2240, 9114), (2352, 8680), (2480, 8232), (2604, 7840), (2688, 7595), (2744, 7440), (2940, 6944), (2976, 6860), (3038, 6720), (3136, 6510), (3255, 6272), (3360, 6076), (3430, 5952), (3472, 5880), (3720, 5488), (3920, 5208), (3968, 5145), (4116, 4960), (4340, 4704), (4480, 4557)]