18379580

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8431}}^1$

素因数の和:8549

約数の個数: 24

約数和(自身を含む): 38955840

約数和(自身を除く): 20576260

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8431, 16862, 33724, 42155, 84310, 168620, 918979, 1837958, 3675916, 4594895, 9189790, 18379580]

約数ペア:

[(1, 18379580), (2, 9189790), (4, 4594895), (5, 3675916), (10, 1837958), (20, 918979), (109, 168620), (218, 84310), (436, 42155), (545, 33724), (1090, 16862), (2180, 8431)]