81377280

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{883}}^1$

素因数の和:916

約数の個数: 144

約数和(自身を含む): 282358440

約数和(自身を除く): 200981160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 883, 960, 1024, 1152, 1280, 1440, 1536, 1766, 1920, 2048, 2304, 2560, 2649, 2880, 3072, 3532, 3840, 4415, 4608, 5120, 5298, 5760, 6144, 7064, 7680, 7947, 8830, 9216, 10240, 10596, 11520, 13245, 14128, 15360, 15894, 17660, 18432, 21192, 23040, 26490, 28256, 30720, 31788, 35320, 39735, 42384, 46080, 52980, 56512, 63576, 70640, 79470, 84768, 92160, 105960, 113024, 127152, 141280, 158940, 169536, 211920, 226048, 254304, 282560, 317880, 339072, 423840, 452096, 508608, 565120, 635760, 678144, 847680, 904192, 1017216, 1130240, 1271520, 1356288, 1695360, 1808384, 2034432, 2260480, 2543040, 2712576, 3390720, 4068864, 4520960, 5086080, 5425152, 6781440, 8137728, 9041920, 10172160, 13562880, 16275456, 20344320, 27125760, 40688640, 81377280]

約数ペア:

[(1, 81377280), (2, 40688640), (3, 27125760), (4, 20344320), (5, 16275456), (6, 13562880), (8, 10172160), (9, 9041920), (10, 8137728), (12, 6781440), (15, 5425152), (16, 5086080), (18, 4520960), (20, 4068864), (24, 3390720), (30, 2712576), (32, 2543040), (36, 2260480), (40, 2034432), (45, 1808384), (48, 1695360), (60, 1356288), (64, 1271520), (72, 1130240), (80, 1017216), (90, 904192), (96, 847680), (120, 678144), (128, 635760), (144, 565120), (160, 508608), (180, 452096), (192, 423840), (240, 339072), (256, 317880), (288, 282560), (320, 254304), (360, 226048), (384, 211920), (480, 169536), (512, 158940), (576, 141280), (640, 127152), (720, 113024), (768, 105960), (883, 92160), (960, 84768), (1024, 79470), (1152, 70640), (1280, 63576), (1440, 56512), (1536, 52980), (1766, 46080), (1920, 42384), (2048, 39735), (2304, 35320), (2560, 31788), (2649, 30720), (2880, 28256), (3072, 26490), (3532, 23040), (3840, 21192), (4415, 18432), (4608, 17660), (5120, 15894), (5298, 15360), (5760, 14128), (6144, 13245), (7064, 11520), (7680, 10596), (7947, 10240), (8830, 9216)]