18183380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:576

約数の個数: 48

約数和(自身を含む): 40656000

約数和(自身を除く): 22472620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 439, 545, 878, 1090, 1756, 2071, 2180, 2195, 4142, 4390, 8284, 8341, 8780, 10355, 16682, 20710, 33364, 41420, 41705, 47851, 83410, 95702, 166820, 191404, 239255, 478510, 909169, 957020, 1818338, 3636676, 4545845, 9091690, 18183380]

約数ペア:

[(1, 18183380), (2, 9091690), (4, 4545845), (5, 3636676), (10, 1818338), (19, 957020), (20, 909169), (38, 478510), (76, 239255), (95, 191404), (109, 166820), (190, 95702), (218, 83410), (380, 47851), (436, 41705), (439, 41420), (545, 33364), (878, 20710), (1090, 16682), (1756, 10355), (2071, 8780), (2180, 8341), (2195, 8284), (4142, 4390)]