18967720

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2741}}^1$

素因数の和:2925

約数の個数: 32

約数和(自身を含む): 42939720

約数和(自身を除く): 23972000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2741, 3460, 5482, 6920, 10964, 13705, 21928, 27410, 54820, 109640, 474193, 948386, 1896772, 2370965, 3793544, 4741930, 9483860, 18967720]

約数ペア:

[(1, 18967720), (2, 9483860), (4, 4741930), (5, 3793544), (8, 2370965), (10, 1896772), (20, 948386), (40, 474193), (173, 109640), (346, 54820), (692, 27410), (865, 21928), (1384, 13705), (1730, 10964), (2741, 6920), (3460, 5482)]