81039840

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:385

約数の個数: 192

約数和(自身を含む): 296110080

約数和(自身を除く): 215070240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 89, 96, 105, 112, 120, 140, 160, 168, 178, 210, 224, 240, 267, 271, 280, 336, 356, 420, 445, 480, 534, 542, 560, 623, 672, 712, 813, 840, 890, 1068, 1084, 1120, 1246, 1335, 1355, 1424, 1626, 1680, 1780, 1869, 1897, 2136, 2168, 2492, 2670, 2710, 2848, 3115, 3252, 3360, 3560, 3738, 3794, 4065, 4272, 4336, 4984, 5340, 5420, 5691, 6230, 6504, 7120, 7476, 7588, 8130, 8544, 8672, 9345, 9485, 9968, 10680, 10840, 11382, 12460, 13008, 14240, 14952, 15176, 16260, 18690, 18970, 19936, 21360, 21680, 22764, 24119, 24920, 26016, 28455, 29904, 30352, 32520, 37380, 37940, 42720, 43360, 45528, 48238, 49840, 56910, 59808, 60704, 65040, 72357, 74760, 75880, 91056, 96476, 99680, 113820, 120595, 130080, 144714, 149520, 151760, 168833, 182112, 192952, 227640, 241190, 289428, 299040, 303520, 337666, 361785, 385904, 455280, 482380, 506499, 578856, 675332, 723570, 771808, 844165, 910560, 964760, 1012998, 1157712, 1350664, 1447140, 1688330, 1929520, 2025996, 2315424, 2532495, 2701328, 2894280, 3376660, 3859040, 4051992, 5064990, 5402656, 5788560, 6753320, 8103984, 10129980, 11577120, 13506640, 16207968, 20259960, 27013280, 40519920, 81039840]

約数ペア:

[(1, 81039840), (2, 40519920), (3, 27013280), (4, 20259960), (5, 16207968), (6, 13506640), (7, 11577120), (8, 10129980), (10, 8103984), (12, 6753320), (14, 5788560), (15, 5402656), (16, 5064990), (20, 4051992), (21, 3859040), (24, 3376660), (28, 2894280), (30, 2701328), (32, 2532495), (35, 2315424), (40, 2025996), (42, 1929520), (48, 1688330), (56, 1447140), (60, 1350664), (70, 1157712), (80, 1012998), (84, 964760), (89, 910560), (96, 844165), (105, 771808), (112, 723570), (120, 675332), (140, 578856), (160, 506499), (168, 482380), (178, 455280), (210, 385904), (224, 361785), (240, 337666), (267, 303520), (271, 299040), (280, 289428), (336, 241190), (356, 227640), (420, 192952), (445, 182112), (480, 168833), (534, 151760), (542, 149520), (560, 144714), (623, 130080), (672, 120595), (712, 113820), (813, 99680), (840, 96476), (890, 91056), (1068, 75880), (1084, 74760), (1120, 72357), (1246, 65040), (1335, 60704), (1355, 59808), (1424, 56910), (1626, 49840), (1680, 48238), (1780, 45528), (1869, 43360), (1897, 42720), (2136, 37940), (2168, 37380), (2492, 32520), (2670, 30352), (2710, 29904), (2848, 28455), (3115, 26016), (3252, 24920), (3360, 24119), (3560, 22764), (3738, 21680), (3794, 21360), (4065, 19936), (4272, 18970), (4336, 18690), (4984, 16260), (5340, 15176), (5420, 14952), (5691, 14240), (6230, 13008), (6504, 12460), (7120, 11382), (7476, 10840), (7588, 10680), (8130, 9968), (8544, 9485), (8672, 9345)]