16639280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:754

約数の個数: 80

約数和(自身を含む): 45306624

約数和(自身を除く): 28667344

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 691, 860, 1204, 1382, 1505, 1720, 2408, 2764, 3010, 3440, 3455, 4816, 4837, 5528, 6020, 6910, 9674, 11056, 12040, 13820, 19348, 24080, 24185, 27640, 29713, 38696, 48370, 55280, 59426, 77392, 96740, 118852, 148565, 193480, 207991, 237704, 297130, 386960, 415982, 475408, 594260, 831964, 1039955, 1188520, 1663928, 2079910, 2377040, 3327856, 4159820, 8319640, 16639280]

約数ペア:

[(1, 16639280), (2, 8319640), (4, 4159820), (5, 3327856), (7, 2377040), (8, 2079910), (10, 1663928), (14, 1188520), (16, 1039955), (20, 831964), (28, 594260), (35, 475408), (40, 415982), (43, 386960), (56, 297130), (70, 237704), (80, 207991), (86, 193480), (112, 148565), (140, 118852), (172, 96740), (215, 77392), (280, 59426), (301, 55280), (344, 48370), (430, 38696), (560, 29713), (602, 27640), (688, 24185), (691, 24080), (860, 19348), (1204, 13820), (1382, 12040), (1505, 11056), (1720, 9674), (2408, 6910), (2764, 6020), (3010, 5528), (3440, 4837), (3455, 4816)]