18454840

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1307}}^1$

素因数の和:1671

約数の個数: 32

約数和(自身を含む): 41672880

約数和(自身を除く): 23218040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1307, 1412, 1765, 2614, 2824, 3530, 5228, 6535, 7060, 10456, 13070, 14120, 26140, 52280, 461371, 922742, 1845484, 2306855, 3690968, 4613710, 9227420, 18454840]

約数ペア:

[(1, 18454840), (2, 9227420), (4, 4613710), (5, 3690968), (8, 2306855), (10, 1845484), (20, 922742), (40, 461371), (353, 52280), (706, 26140), (1307, 14120), (1412, 13070), (1765, 10456), (2614, 7060), (2824, 6535), (3530, 5228)]