81428480

素因数分解:

$2^{15}\times 5^1\times 7^1\times {\mathrm{71}}^1$

素因数の和:113

約数の個数: 128

約数和(自身を含む): 226488960

約数和(自身を除く): 145060480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 128, 140, 142, 160, 224, 256, 280, 284, 320, 355, 448, 497, 512, 560, 568, 640, 710, 896, 994, 1024, 1120, 1136, 1280, 1420, 1792, 1988, 2048, 2240, 2272, 2485, 2560, 2840, 3584, 3976, 4096, 4480, 4544, 4970, 5120, 5680, 7168, 7952, 8192, 8960, 9088, 9940, 10240, 11360, 14336, 15904, 16384, 17920, 18176, 19880, 20480, 22720, 28672, 31808, 32768, 35840, 36352, 39760, 40960, 45440, 57344, 63616, 71680, 72704, 79520, 81920, 90880, 114688, 127232, 143360, 145408, 159040, 163840, 181760, 229376, 254464, 286720, 290816, 318080, 363520, 508928, 573440, 581632, 636160, 727040, 1017856, 1146880, 1163264, 1272320, 1454080, 2035712, 2326528, 2544640, 2908160, 4071424, 5089280, 5816320, 8142848, 10178560, 11632640, 16285696, 20357120, 40714240, 81428480]

約数ペア:

[(1, 81428480), (2, 40714240), (4, 20357120), (5, 16285696), (7, 11632640), (8, 10178560), (10, 8142848), (14, 5816320), (16, 5089280), (20, 4071424), (28, 2908160), (32, 2544640), (35, 2326528), (40, 2035712), (56, 1454080), (64, 1272320), (70, 1163264), (71, 1146880), (80, 1017856), (112, 727040), (128, 636160), (140, 581632), (142, 573440), (160, 508928), (224, 363520), (256, 318080), (280, 290816), (284, 286720), (320, 254464), (355, 229376), (448, 181760), (497, 163840), (512, 159040), (560, 145408), (568, 143360), (640, 127232), (710, 114688), (896, 90880), (994, 81920), (1024, 79520), (1120, 72704), (1136, 71680), (1280, 63616), (1420, 57344), (1792, 45440), (1988, 40960), (2048, 39760), (2240, 36352), (2272, 35840), (2485, 32768), (2560, 31808), (2840, 28672), (3584, 22720), (3976, 20480), (4096, 19880), (4480, 18176), (4544, 17920), (4970, 16384), (5120, 15904), (5680, 14336), (7168, 11360), (7952, 10240), (8192, 9940), (8960, 9088)]