208400

素因数分解:

$2^4\times 5^2\times {\mathrm{521}}^1$

素因数の和:539

約数の個数: 30

約数和(自身を含む): 501642

約数和(自身を除く): 293242

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 521, 1042, 2084, 2605, 4168, 5210, 8336, 10420, 13025, 20840, 26050, 41680, 52100, 104200, 208400]

約数ペア:

[(1, 208400), (2, 104200), (4, 52100), (5, 41680), (8, 26050), (10, 20840), (16, 13025), (20, 10420), (25, 8336), (40, 5210), (50, 4168), (80, 2605), (100, 2084), (200, 1042), (400, 521)]