20988702

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1061}}^1$

素因数の和:1233

約数の個数: 48

約数和(自身を含む): 52352352

約数和(自身を除く): 31363650

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 157, 314, 471, 942, 1061, 1099, 1413, 2122, 2198, 2826, 3183, 3297, 6366, 6594, 7427, 9549, 9891, 14854, 19098, 19782, 22281, 44562, 66843, 133686, 166577, 333154, 499731, 999462, 1166039, 1499193, 2332078, 2998386, 3498117, 6996234, 10494351, 20988702]

約数ペア:

[(1, 20988702), (2, 10494351), (3, 6996234), (6, 3498117), (7, 2998386), (9, 2332078), (14, 1499193), (18, 1166039), (21, 999462), (42, 499731), (63, 333154), (126, 166577), (157, 133686), (314, 66843), (471, 44562), (942, 22281), (1061, 19782), (1099, 19098), (1413, 14854), (2122, 9891), (2198, 9549), (2826, 7427), (3183, 6594), (3297, 6366)]