138431860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{141257}}^1$

素因数の和:141280

約数の個数: 36

約数和(自身を含む): 338171652

約数和(自身を除く): 199739792

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 141257, 282514, 565028, 706285, 988799, 1412570, 1977598, 2825140, 3955196, 4943995, 6921593, 9887990, 13843186, 19775980, 27686372, 34607965, 69215930, 138431860]

約数ペア:

[(1, 138431860), (2, 69215930), (4, 34607965), (5, 27686372), (7, 19775980), (10, 13843186), (14, 9887990), (20, 6921593), (28, 4943995), (35, 3955196), (49, 2825140), (70, 1977598), (98, 1412570), (140, 988799), (196, 706285), (245, 565028), (490, 282514), (980, 141257)]