20170784

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:297

約数の個数: 48

約数和(自身を含む): 41313888

約数和(自身を除く): 21143104

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 107, 137, 172, 214, 274, 344, 428, 548, 688, 856, 1096, 1376, 1712, 2192, 3424, 4384, 4601, 5891, 9202, 11782, 14659, 18404, 23564, 29318, 36808, 47128, 58636, 73616, 94256, 117272, 147232, 188512, 234544, 469088, 630337, 1260674, 2521348, 5042696, 10085392, 20170784]

約数ペア:

[(1, 20170784), (2, 10085392), (4, 5042696), (8, 2521348), (16, 1260674), (32, 630337), (43, 469088), (86, 234544), (107, 188512), (137, 147232), (172, 117272), (214, 94256), (274, 73616), (344, 58636), (428, 47128), (548, 36808), (688, 29318), (856, 23564), (1096, 18404), (1376, 14659), (1712, 11782), (2192, 9202), (3424, 5891), (4384, 4601)]