20452460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1051}}^1$

素因数の和:1206

約数の個数: 48

約数和(自身を含む): 49486080

約数和(自身を除く): 29033620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1051, 1390, 1946, 2102, 2780, 3892, 4204, 4865, 5255, 7357, 9730, 10510, 14714, 19460, 21020, 29428, 36785, 73570, 146089, 147140, 292178, 584356, 730445, 1022623, 1460890, 2045246, 2921780, 4090492, 5113115, 10226230, 20452460]

約数ペア:

[(1, 20452460), (2, 10226230), (4, 5113115), (5, 4090492), (7, 2921780), (10, 2045246), (14, 1460890), (20, 1022623), (28, 730445), (35, 584356), (70, 292178), (139, 147140), (140, 146089), (278, 73570), (556, 36785), (695, 29428), (973, 21020), (1051, 19460), (1390, 14714), (1946, 10510), (2102, 9730), (2780, 7357), (3892, 5255), (4204, 4865)]