21221800

素因数分解:

$2^3\times 5^2\times {\mathrm{106109}}^1$

素因数の和:106125

約数の個数: 24

約数和(自身を含む): 49341150

約数和(自身を除く): 28119350

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 106109, 212218, 424436, 530545, 848872, 1061090, 2122180, 2652725, 4244360, 5305450, 10610900, 21221800]

約数ペア:

[(1, 21221800), (2, 10610900), (4, 5305450), (5, 4244360), (8, 2652725), (10, 2122180), (20, 1061090), (25, 848872), (40, 530545), (50, 424436), (100, 212218), (200, 106109)]