80109920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1979}}^1$

素因数の和:2028

約数の個数: 96

約数和(自身を含む): 215550720

約数和(自身を除く): 135440800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 80, 88, 92, 110, 115, 160, 176, 184, 220, 230, 253, 352, 368, 440, 460, 506, 736, 880, 920, 1012, 1265, 1760, 1840, 1979, 2024, 2530, 3680, 3958, 4048, 5060, 7916, 8096, 9895, 10120, 15832, 19790, 20240, 21769, 31664, 39580, 40480, 43538, 45517, 63328, 79160, 87076, 91034, 108845, 158320, 174152, 182068, 217690, 227585, 316640, 348304, 364136, 435380, 455170, 500687, 696608, 728272, 870760, 910340, 1001374, 1456544, 1741520, 1820680, 2002748, 2503435, 3483040, 3641360, 4005496, 5006870, 7282720, 8010992, 10013740, 16021984, 20027480, 40054960, 80109920]

約数ペア:

[(1, 80109920), (2, 40054960), (4, 20027480), (5, 16021984), (8, 10013740), (10, 8010992), (11, 7282720), (16, 5006870), (20, 4005496), (22, 3641360), (23, 3483040), (32, 2503435), (40, 2002748), (44, 1820680), (46, 1741520), (55, 1456544), (80, 1001374), (88, 910340), (92, 870760), (110, 728272), (115, 696608), (160, 500687), (176, 455170), (184, 435380), (220, 364136), (230, 348304), (253, 316640), (352, 227585), (368, 217690), (440, 182068), (460, 174152), (506, 158320), (736, 108845), (880, 91034), (920, 87076), (1012, 79160), (1265, 63328), (1760, 45517), (1840, 43538), (1979, 40480), (2024, 39580), (2530, 31664), (3680, 21769), (3958, 20240), (4048, 19790), (5060, 15832), (7916, 10120), (8096, 9895)]