17871640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4099}}^1$

素因数の和:4219

約数の個数: 32

約数和(自身を含む): 40590000

約数和(自身を除く): 22718360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4099, 4360, 8198, 16396, 20495, 32792, 40990, 81980, 163960, 446791, 893582, 1787164, 2233955, 3574328, 4467910, 8935820, 17871640]

約数ペア:

[(1, 17871640), (2, 8935820), (4, 4467910), (5, 3574328), (8, 2233955), (10, 1787164), (20, 893582), (40, 446791), (109, 163960), (218, 81980), (436, 40990), (545, 32792), (872, 20495), (1090, 16396), (2180, 8198), (4099, 4360)]