2223220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 4725000

約数和(自身を除く): 2501780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1249, 1780, 2498, 4996, 6245, 12490, 24980, 111161, 222322, 444644, 555805, 1111610, 2223220]

約数ペア:

[(1, 2223220), (2, 1111610), (4, 555805), (5, 444644), (10, 222322), (20, 111161), (89, 24980), (178, 12490), (356, 6245), (445, 4996), (890, 2498), (1249, 1780)]