201520180

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{22441}}^1$

素因数の和:22899

約数の個数: 24

約数和(自身を含む): 424153800

約数和(自身を除く): 222633620

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 4490, 8980, 22441, 44882, 89764, 112205, 224410, 448820, 10076009, 20152018, 40304036, 50380045, 100760090, 201520180]

約数ペア:

[(1, 201520180), (2, 100760090), (4, 50380045), (5, 40304036), (10, 20152018), (20, 10076009), (449, 448820), (898, 224410), (1796, 112205), (2245, 89764), (4490, 44882), (8980, 22441)]