20445120

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:283

約数の個数: 168

約数和(自身を含む): 72908160

約数和(自身を除く): 52463040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 64, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 192, 229, 240, 248, 279, 288, 310, 320, 360, 372, 458, 465, 480, 496, 558, 576, 620, 687, 720, 744, 916, 930, 960, 992, 1116, 1145, 1240, 1374, 1395, 1440, 1488, 1832, 1860, 1984, 2061, 2232, 2290, 2480, 2748, 2790, 2880, 2976, 3435, 3664, 3720, 4122, 4464, 4580, 4960, 5496, 5580, 5952, 6870, 7099, 7328, 7440, 8244, 8928, 9160, 9920, 10305, 10992, 11160, 13740, 14198, 14656, 14880, 16488, 17856, 18320, 20610, 21297, 21984, 22320, 27480, 28396, 29760, 32976, 35495, 36640, 41220, 42594, 43968, 44640, 54960, 56792, 63891, 65952, 70990, 73280, 82440, 85188, 89280, 106485, 109920, 113584, 127782, 131904, 141980, 164880, 170376, 212970, 219840, 227168, 255564, 283960, 319455, 329760, 340752, 425940, 454336, 511128, 567920, 638910, 659520, 681504, 851880, 1022256, 1135840, 1277820, 1363008, 1703760, 2044512, 2271680, 2555640, 3407520, 4089024, 5111280, 6815040, 10222560, 20445120]

約数ペア:

[(1, 20445120), (2, 10222560), (3, 6815040), (4, 5111280), (5, 4089024), (6, 3407520), (8, 2555640), (9, 2271680), (10, 2044512), (12, 1703760), (15, 1363008), (16, 1277820), (18, 1135840), (20, 1022256), (24, 851880), (30, 681504), (31, 659520), (32, 638910), (36, 567920), (40, 511128), (45, 454336), (48, 425940), (60, 340752), (62, 329760), (64, 319455), (72, 283960), (80, 255564), (90, 227168), (93, 219840), (96, 212970), (120, 170376), (124, 164880), (144, 141980), (155, 131904), (160, 127782), (180, 113584), (186, 109920), (192, 106485), (229, 89280), (240, 85188), (248, 82440), (279, 73280), (288, 70990), (310, 65952), (320, 63891), (360, 56792), (372, 54960), (458, 44640), (465, 43968), (480, 42594), (496, 41220), (558, 36640), (576, 35495), (620, 32976), (687, 29760), (720, 28396), (744, 27480), (916, 22320), (930, 21984), (960, 21297), (992, 20610), (1116, 18320), (1145, 17856), (1240, 16488), (1374, 14880), (1395, 14656), (1440, 14198), (1488, 13740), (1832, 11160), (1860, 10992), (1984, 10305), (2061, 9920), (2232, 9160), (2290, 8928), (2480, 8244), (2748, 7440), (2790, 7328), (2880, 7099), (2976, 6870), (3435, 5952), (3664, 5580), (3720, 5496), (4122, 4960), (4464, 4580)]