21090800

素因数分解:

$2^4\times 5^2\times {\mathrm{52727}}^1$

素因数の和:52745

約数の個数: 30

約数和(自身を含む): 50671608

約数和(自身を除く): 29580808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52727, 105454, 210908, 263635, 421816, 527270, 843632, 1054540, 1318175, 2109080, 2636350, 4218160, 5272700, 10545400, 21090800]

約数ペア:

[(1, 21090800), (2, 10545400), (4, 5272700), (5, 4218160), (8, 2636350), (10, 2109080), (16, 1318175), (20, 1054540), (25, 843632), (40, 527270), (50, 421816), (80, 263635), (100, 210908), (200, 105454), (400, 52727)]