20849444

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 45911040

約数和(自身を除く): 25061596

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 139, 154, 278, 308, 487, 556, 973, 974, 1529, 1946, 1948, 3058, 3409, 3892, 5357, 6116, 6818, 10703, 10714, 13636, 21406, 21428, 37499, 42812, 67693, 74998, 135386, 149996, 270772, 473851, 744623, 947702, 1489246, 1895404, 2978492, 5212361, 10424722, 20849444]

約数ペア:

[(1, 20849444), (2, 10424722), (4, 5212361), (7, 2978492), (11, 1895404), (14, 1489246), (22, 947702), (28, 744623), (44, 473851), (77, 270772), (139, 149996), (154, 135386), (278, 74998), (308, 67693), (487, 42812), (556, 37499), (973, 21428), (974, 21406), (1529, 13636), (1946, 10714), (1948, 10703), (3058, 6818), (3409, 6116), (3892, 5357)]