31481680

素因数分解:

$2^4\times 5^1\times {\mathrm{393521}}^1$

素因数の和:393534

約数の個数: 20

約数和(自身を含む): 73195092

約数和(自身を除く): 41713412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 393521, 787042, 1574084, 1967605, 3148168, 3935210, 6296336, 7870420, 15740840, 31481680]

約数ペア:

[(1, 31481680), (2, 15740840), (4, 7870420), (5, 6296336), (8, 3935210), (10, 3148168), (16, 1967605), (20, 1574084), (40, 787042), (80, 393521)]