19635140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1009}}^1$

素因数の和:1164

約数の個数: 48

約数和(自身を含む): 47510400

約数和(自身を除く): 27875260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1009, 1390, 1946, 2018, 2780, 3892, 4036, 4865, 5045, 7063, 9730, 10090, 14126, 19460, 20180, 28252, 35315, 70630, 140251, 141260, 280502, 561004, 701255, 981757, 1402510, 1963514, 2805020, 3927028, 4908785, 9817570, 19635140]

約数ペア:

[(1, 19635140), (2, 9817570), (4, 4908785), (5, 3927028), (7, 2805020), (10, 1963514), (14, 1402510), (20, 981757), (28, 701255), (35, 561004), (70, 280502), (139, 141260), (140, 140251), (278, 70630), (556, 35315), (695, 28252), (973, 20180), (1009, 19460), (1390, 14126), (1946, 10090), (2018, 9730), (2780, 7063), (3892, 5045), (4036, 4865)]