681680

素因数分解:

$2^4\times 5^1\times {\mathrm{8521}}^1$

素因数の和:8534

約数の個数: 20

約数和(自身を含む): 1585092

約数和(自身を除く): 903412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8521, 17042, 34084, 42605, 68168, 85210, 136336, 170420, 340840, 681680]

約数ペア:

[(1, 681680), (2, 340840), (4, 170420), (5, 136336), (8, 85210), (10, 68168), (16, 42605), (20, 34084), (40, 17042), (80, 8521)]