2881820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1619}}^1$

素因数の和:1717

約数の個数: 24

約数和(自身を含む): 6123600

約数和(自身を除く): 3241780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1619, 1780, 3238, 6476, 8095, 16190, 32380, 144091, 288182, 576364, 720455, 1440910, 2881820]

約数ペア:

[(1, 2881820), (2, 1440910), (4, 720455), (5, 576364), (10, 288182), (20, 144091), (89, 32380), (178, 16190), (356, 8095), (445, 6476), (890, 3238), (1619, 1780)]