201997580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{72661}}^1$

素因数の和:72809

約数の個数: 24

約数和(自身を含む): 427252560

約数和(自身を除く): 225254980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 72661, 145322, 290644, 363305, 726610, 1453220, 10099879, 20199758, 40399516, 50499395, 100998790, 201997580]

約数ペア:

[(1, 201997580), (2, 100998790), (4, 50499395), (5, 40399516), (10, 20199758), (20, 10099879), (139, 1453220), (278, 726610), (556, 363305), (695, 290644), (1390, 145322), (2780, 72661)]