81114880

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{823}}^1$

素因数の和:862

約数の個数: 144

約数和(自身を含む): 242532864

約数和(自身を除く): 161417984

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 128, 140, 154, 160, 176, 220, 224, 256, 280, 308, 320, 352, 385, 440, 448, 560, 616, 640, 704, 770, 823, 880, 896, 1120, 1232, 1280, 1408, 1540, 1646, 1760, 1792, 2240, 2464, 2816, 3080, 3292, 3520, 4115, 4480, 4928, 5761, 6160, 6584, 7040, 8230, 8960, 9053, 9856, 11522, 12320, 13168, 14080, 16460, 18106, 19712, 23044, 24640, 26336, 28805, 32920, 36212, 45265, 46088, 49280, 52672, 57610, 63371, 65840, 72424, 90530, 92176, 98560, 105344, 115220, 126742, 131680, 144848, 181060, 184352, 210688, 230440, 253484, 263360, 289696, 316855, 362120, 368704, 460880, 506968, 526720, 579392, 633710, 724240, 737408, 921760, 1013936, 1053440, 1158784, 1267420, 1448480, 1474816, 1843520, 2027872, 2317568, 2534840, 2896960, 3687040, 4055744, 5069680, 5793920, 7374080, 8111488, 10139360, 11587840, 16222976, 20278720, 40557440, 81114880]

約数ペア:

[(1, 81114880), (2, 40557440), (4, 20278720), (5, 16222976), (7, 11587840), (8, 10139360), (10, 8111488), (11, 7374080), (14, 5793920), (16, 5069680), (20, 4055744), (22, 3687040), (28, 2896960), (32, 2534840), (35, 2317568), (40, 2027872), (44, 1843520), (55, 1474816), (56, 1448480), (64, 1267420), (70, 1158784), (77, 1053440), (80, 1013936), (88, 921760), (110, 737408), (112, 724240), (128, 633710), (140, 579392), (154, 526720), (160, 506968), (176, 460880), (220, 368704), (224, 362120), (256, 316855), (280, 289696), (308, 263360), (320, 253484), (352, 230440), (385, 210688), (440, 184352), (448, 181060), (560, 144848), (616, 131680), (640, 126742), (704, 115220), (770, 105344), (823, 98560), (880, 92176), (896, 90530), (1120, 72424), (1232, 65840), (1280, 63371), (1408, 57610), (1540, 52672), (1646, 49280), (1760, 46088), (1792, 45265), (2240, 36212), (2464, 32920), (2816, 28805), (3080, 26336), (3292, 24640), (3520, 23044), (4115, 19712), (4480, 18106), (4928, 16460), (5761, 14080), (6160, 13168), (6584, 12320), (7040, 11522), (8230, 9856), (8960, 9053)]