206829980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{211051}}^1$

素因数の和:211074

約数の個数: 36

約数和(自身を含む): 505258488

約数和(自身を除く): 298428508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 211051, 422102, 844204, 1055255, 1477357, 2110510, 2954714, 4221020, 5909428, 7386785, 10341499, 14773570, 20682998, 29547140, 41365996, 51707495, 103414990, 206829980]

約数ペア:

[(1, 206829980), (2, 103414990), (4, 51707495), (5, 41365996), (7, 29547140), (10, 20682998), (14, 14773570), (20, 10341499), (28, 7386785), (35, 5909428), (49, 4221020), (70, 2954714), (98, 2110510), (140, 1477357), (196, 1055255), (245, 844204), (490, 422102), (980, 211051)]