81922700

素因数分解:

$2^2\times 5^2\times {\mathrm{409}}^1\times {\mathrm{2003}}^1$

素因数の和:2426

約数の個数: 36

約数和(自身を含む): 178295880

約数和(自身を除く): 96373180

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 409, 818, 1636, 2003, 2045, 4006, 4090, 8012, 8180, 10015, 10225, 20030, 20450, 40060, 40900, 50075, 100150, 200300, 819227, 1638454, 3276908, 4096135, 8192270, 16384540, 20480675, 40961350, 81922700]

約数ペア:

[(1, 81922700), (2, 40961350), (4, 20480675), (5, 16384540), (10, 8192270), (20, 4096135), (25, 3276908), (50, 1638454), (100, 819227), (409, 200300), (818, 100150), (1636, 50075), (2003, 40900), (2045, 40060), (4006, 20450), (4090, 20030), (8012, 10225), (8180, 10015)]