81931520

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^2$

素因数の和:89

約数の個数: 162

約数和(自身を含む): 225501234

約数和(自身を除く): 143569714

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 92, 110, 115, 121, 128, 160, 176, 184, 220, 230, 242, 253, 256, 320, 352, 368, 440, 460, 484, 506, 529, 605, 640, 704, 736, 880, 920, 968, 1012, 1058, 1210, 1265, 1280, 1408, 1472, 1760, 1840, 1936, 2024, 2116, 2420, 2530, 2645, 2783, 2816, 2944, 3520, 3680, 3872, 4048, 4232, 4840, 5060, 5290, 5566, 5819, 5888, 7040, 7360, 7744, 8096, 8464, 9680, 10120, 10580, 11132, 11638, 13915, 14080, 14720, 15488, 16192, 16928, 19360, 20240, 21160, 22264, 23276, 27830, 29095, 29440, 30976, 32384, 33856, 38720, 40480, 42320, 44528, 46552, 55660, 58190, 64009, 64768, 67712, 77440, 80960, 84640, 89056, 93104, 111320, 116380, 128018, 135424, 154880, 161920, 169280, 178112, 186208, 222640, 232760, 256036, 320045, 323840, 338560, 356224, 372416, 445280, 465520, 512072, 640090, 677120, 712448, 744832, 890560, 931040, 1024144, 1280180, 1489664, 1781120, 1862080, 2048288, 2560360, 3562240, 3724160, 4096576, 5120720, 7448320, 8193152, 10241440, 16386304, 20482880, 40965760, 81931520]

約数ペア:

[(1, 81931520), (2, 40965760), (4, 20482880), (5, 16386304), (8, 10241440), (10, 8193152), (11, 7448320), (16, 5120720), (20, 4096576), (22, 3724160), (23, 3562240), (32, 2560360), (40, 2048288), (44, 1862080), (46, 1781120), (55, 1489664), (64, 1280180), (80, 1024144), (88, 931040), (92, 890560), (110, 744832), (115, 712448), (121, 677120), (128, 640090), (160, 512072), (176, 465520), (184, 445280), (220, 372416), (230, 356224), (242, 338560), (253, 323840), (256, 320045), (320, 256036), (352, 232760), (368, 222640), (440, 186208), (460, 178112), (484, 169280), (506, 161920), (529, 154880), (605, 135424), (640, 128018), (704, 116380), (736, 111320), (880, 93104), (920, 89056), (968, 84640), (1012, 80960), (1058, 77440), (1210, 67712), (1265, 64768), (1280, 64009), (1408, 58190), (1472, 55660), (1760, 46552), (1840, 44528), (1936, 42320), (2024, 40480), (2116, 38720), (2420, 33856), (2530, 32384), (2645, 30976), (2783, 29440), (2816, 29095), (2944, 27830), (3520, 23276), (3680, 22264), (3872, 21160), (4048, 20240), (4232, 19360), (4840, 16928), (5060, 16192), (5290, 15488), (5566, 14720), (5819, 14080), (5888, 13915), (7040, 11638), (7360, 11132), (7744, 10580), (8096, 10120), (8464, 9680)]