21086600

素因数分解:

$2^3\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1787}}^1$

素因数の和:1862

約数の個数: 48

約数和(自身を含む): 49885200

約数和(自身を除く): 28798600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 59, 100, 118, 200, 236, 295, 472, 590, 1180, 1475, 1787, 2360, 2950, 3574, 5900, 7148, 8935, 11800, 14296, 17870, 35740, 44675, 71480, 89350, 105433, 178700, 210866, 357400, 421732, 527165, 843464, 1054330, 2108660, 2635825, 4217320, 5271650, 10543300, 21086600]

約数ペア:

[(1, 21086600), (2, 10543300), (4, 5271650), (5, 4217320), (8, 2635825), (10, 2108660), (20, 1054330), (25, 843464), (40, 527165), (50, 421732), (59, 357400), (100, 210866), (118, 178700), (200, 105433), (236, 89350), (295, 71480), (472, 44675), (590, 35740), (1180, 17870), (1475, 14296), (1787, 11800), (2360, 8935), (2950, 7148), (3574, 5900)]